List of Alvin and the Chipmunks (2015 TV series) episodes

When Theodore gets to pick the show, his bear recommends Talking Teddy TV Fun Time. Unable to stand any more of the bear, Alvin convinces Simon to do something about it, so Simon comes up with the idea to program it to obey to a keyboard he conceived. The next night, Theodore seems a little upset by the change of he teddy. While Alvin abuses his control on the bear, Simon tries to dampen Alvin's actions. After Simon wants to end the charade, Alvin steals the keyboard, hides, and continues to take advantage, to Simon's displeasure, of Theodore. Simon, unable to stand any more, Simon rewires the bear once more to teach Alvin a lesson. Once he succeeds in freaking out Alvin, Simon convinces Theodore to donate Teddy to a daycare program. In the end, Theodore returns with a new and improved Talking Teddy.

The Chipmunks' new year at school starts, and Alvin immediately develops a crush on the new principal. However, to get past the principal's assistant, who is none other than Brittany, Alvin misbehaves on purpose and throws his classes into chaos to get summoned to her office. Tired of his attentions, the principal suspends him, but once home Alvin drives David crazy, who then meets with the principal to beg her to take Alvin back. Alvin sneaks in, believing that they are going on a date, only to discover that the principal is already married to another man.

After Alvin spots Brittany having a suspicious behaviour and various weird occurrences in the school's basement, Alvin starts to believe aliens have taken over the place. Managing to transmit his paranoia to Simon, circumstances lead them to believe Theodore was abducted by the aliens. They go to the school at night in special gear designed by Simon to rescue Theodore, but ultimately in the end uncover the truth: the school is simply being used as a movie set for a science fiction movie.

Jeanette refuses to celebrate her birthday, as when she was younger she believed magic to be real and has grown disenchanted with life since discovering it was not the case. To cheer her up, the Chipmunks make her believe that they offered her a magic wand, but things get out of hand and Alvin ultimately tells her that it is not real. However, touched by her friends' efforts, she now considers that they are what makes her life magical.

Eleanor has a fallout with Brittany and moves in with the boys. Initially, only Alvin is hostile to the girl's invasion, but when Jeanette arrives too for the same reason, the Chipmunks decide to move in with Brittany and freak her out until she agrees to talk to her sisters, who all apologize to each other. As they are about to leave David and the boys' house, however, Alvin asks what the dispute was about, and the bickering starts anew...

As he does not manage to convince Alvin to listen to his new rap song, Theodore uploads it on the Web and it goes viral. Soon, he is signed for a solo career under the name Lil' T. However, Alvin and the others miss him, so they go find him and apologize just as he is about to go on tour with his new rapper friend Biggy Large. Once back home, they all perform and record one of Theodore's compositions with the Chipettes.

Alvin's imagination runs wild again and he starts believing his neighbor, the elderly Miss Croner, to be a jewel thief. Because of his broken leg, he has to resort to complicated tricks to investigate (including manipulating his brothers) but they ultimately discover that she is cheating to win a gardening competition. The next day Alvin goes to Miss Croner's house and he gives her a rose bush to show that he is sorry for accusing her of being a jewel thief and found a gem that actually belonged to her mother's wedding ring. To make it up to her, the Seville family takes Miss Croner out and Alvin offers her the money from the skateboarding competition he wins at the end of the episode.

Both Alvin and Dave want to go see a soccer game the next Saturday, but that same day is their "Family Day", which commemorates the meeting of Dave with the Chipmunks, so they both pretend that they would rather go to their Family Day trip instead. However, Alvin's soccer fever gets the best of him and he tries various plans not to attend the trip. In the end, Alvin confesses his actions to Dave, who reveals he actually wants to go see the game too, so the whole family decides to postpone the trip.

Dave buys a robot, Harmony, to help him manage the boys, whose constant watching quickly drives Alvin into depression. After a misguided manipulation by Alvin in an attempt to deactivate it, Harmony locks Dave, Simon and Theodore at home and humiliates Alvin before his friends by treating him like a baby, which leads Dave to send Harmony back to the factory on the condition that Alvin behaves better.

After a misunderstanding, the Chipmunks and Chipettes believe that Theodore has a crush on a girl and give him advice to ask her out. As he is clueless about their behaviour, Theodore plays along but it ends in disaster. It is ultimately revealed that Theodore only wanted to ask the girl to be his partner for the cooking fair and that his cooking partner has a crush on Simon.

After a personality test, Alvin and Brittany discover that they are soulmates. They are both so terrified by this prospect that they try radically opposite personalities to ensure that it will never happen, but their new selves creep everyone out. Dave, the Chipmunks and Chipettes decide to sell the now useless former belongings of their siblings to make them miss their old personalities, which works perfectly and leads Alvin and Brittany to revert to normal.

To get rid of the corrupt class president, Bocarter Humphrey, Simon runs for the next class president election. However, he soon has to cope with the concurrent candidacy of Alvin. After the campaign devolves into a petty war and an unauthorized pool party thrown by Alvin at the Seville home, Dave forces Alvin to resign and he confesses to Simon that Bocarter asked him to run too so he would take votes away from his brother in exchange for favours. With Alvin's support, Simon ultimately wins the election.

Simon becomes the school's safety supervisor and also gets to pick the location for the next family vacation: he chooses the Smithsonian. Alvin, desperate to escape the trip, starts misbehaving at school, hoping Simon will either give him a citation or let him choose the vacation location, as Dave threatens to cancel the trip if one of them gets into trouble. Unable to make a choice, Simon resigns from his position, which leads to Alvin feeling guilty and talking to both the principal and Dave to fix everything. In the end, Alvin is grounded and does not get to go on the trip while Simon gets his position back, goes to the Smithsonian and has his teacher Miss Smith babysit him while his family is on vacation.

Willing to teach the Chipmunks how to live without technology, Dave takes them on a camping trip, only to discover that the once-thriving vacation spot is now in decay. After initial difficult moments, they actually start enjoying both their solitude and nature, and once back home, although quickly regaining their old habits, the Chipmunks now like to camp in the garden with only their sleeping bags and their imagination.

Theodore has an audition to play the monster part in the school's play, so Alvin wants to teach him fear. However, when he disguises as Theodore's biggest fear clowns, his brother gets frozen in fear. After Alvin and Simon try several tricks to cure him, which all end in failure, they are forced to bring him to the audition where his empty stare scares the casting director who hires him on the spot. Theodore ultimately snaps out of it when crossing a clown's path on the street.

Simon is being bullied at school, so he creates a bodyguard robot to scare the bullies. This works, but when Simon spots the bullies picking on other students, he forces them to read a pamphlet on bullying; however they get so fed up that they destroy his actually inoffensive robot and start picking on him again. His friends and the other students ultimately make a united stand which leads to the bullies giving up on their habit.

Jeanette asks for Alvin's help to overcome her shyness, but his misguided advice lead her to act very weirdly at school. Brittany, who wants to throw a party at home but is embarrassed by her sister's behaviour, makes everyone believe she is just deranged and humiliates her by saying that she will not be invited to her party in front of the class. During the party, however, Brittany feels guilty and apologizes to Jeanette, who overcomes her shyness to throw a toast to her.

To buy a video game, Alvin tries to get a babysitting job to raise money. However, as he is unable to get one, he steals Brittany's own babysitting job, as she is working too to get a new pair of shoes. Alvin proves incompetent for the job and also has to deal with Brittany seeking revenge, while the kid gets unruly. In the end, Brittany gets the kid to calm down and he agrees not to tell his parents about Alvin's poor performance if he buys Brittany's shoes with the money he earned for taking care of him.

One of Miss Croner's cats has gone missing. The Chipmunks are initially dismissive of the problem, so Miss Croner tells them that the cat must be found or else the neighborhood will be cursed. After a series of coincidental bad luck events, they start believing in the curse and go searching for the cat, but fail to find it. Ultimately, they find out the cat hid in the Chipettes' treehouse to give birth to kittens away from Miss Croner's crowd of cats.

Dave gets very sick, and as such is bedridden. Alvin makes a bet with Simon that he can take care of the family until Dave gets better; things quickly turn for the worse. Realizing that he is going to lose the bet, Alvin makes huge efforts to fix things up and succeeds for the most part, but still has to enlist Dave's help when he finally gets better, thus making Simon the winner no matter what.

Dave gets addicted to an MMORPG popular within the neighborhood, playing dirty and forgetting his work (composing a film score) in the process. The Chipmunks and Chipettes therefore have to defend the house from a real-life attack by the players and ultimately convince Dave to stop playing in order to resume his work on the film score with their help.

Alvin wants to buy a limited series skateboard but is grounded, so he asks Theodore to go buy it for him. However, Theodore gets to the shop too late and uses the money to buy a coupon for candies instead. Back home, he lies to his brothers, claiming he was robbed, so the Chipmunks and Chipettes go in search for the thief and catch the boy who bought the skateboard before Theodore. Feeling guilty, Theodore confesses the truth, and while upset, Alvin ultimately forgives him.

In a moment of generosity, Alvin offers his hat to a fan. However, he soon starts losing his singing and physical skills and believes his "mojo" has left him with his hat. He then tries to get it back, but fails every time. The Chipmunks and Chipettes ultimately give him another hat while letting him believe it is his old one and Alvin gets his mojo back. When Alvin discovers the trick, Simon tries to tell him that it is all in his head, but Alvin misses the point and starts believing he can infuse things that touch his head with his mojo.

Alvin is temporarily voiceless. The next day, the Chipmunks go to the zoo disguised as animals and Alvin gets accidentally in a cage while letting free a baby Tasmanian devil due for appendix surgery in the evening. Since he himself is disguised as a Tasmanian devil and is trapped in his costume because he cannot reach the zipper, the zoo personnel mistake him for the baby. Fortunately, Simon, Theodore and Dave, who took the real baby with them believing it was Alvin, realize its true nature and bring it back, saving both Alvin and the baby's life (whose condition was worsening) in the process.

Dave is overparenting the Chipmunks, who try to find him a girlfriend to get some space. One of their picks, Dave's friend Julie, deciphers the boys' intentions and informs Dave of his reputation as a smother mother. Startled by the revelation, Dave starts going out every night so the boys can have the space they are craving for, but they now feel abandoned and ultimately they all talk together to try and find a good balance.

Original song: "Kiss Those Days Goodbye"

Dave tries to write a hit for the next music festival, but is annoyed by the Chipmunks fighting and making a mess in their room. And the worst thing is that they ruin Dave's song in the process. Will they fix it in time for the big performance?

As Dave refuses to buy a reportedly dangerous toy car for Alvin, the latter hijacks Simon's mechanics project for school so that he will build him a replica of the car. Once finished, Alvin steals it but he quickly ends up destroying it because of his irresponsible driving. Thankfully, Simon's teacher gives him another chance, but to his horror Alvin tries again to talk him into building another dangerous vehicle, revealing he learned nothing from the experience.

Alvin and Brittany both compete in a contest to meet an English princess. A few days later, the princess's servant meets them to inform them that Alvin won, but just barely. Alvin and Brittany then have to pass a good manners test, culminating with a date together, to determine who is the actual winner. During the date, Brittany makes Alvin's life a living nightmare, which leads him to lose his temper and screw up. Feeling guilty, Brittany talks to the princess's servant and Alvin gets to meet the princess. However, it is revealed that he can bring a guest, so Brittany starts acting nice to him hoping he will still pick her to go meet the princess...

The Chipettes reminisce how they came to live in their treehouse: some time before, they lived at the Seville home with the Chipmunks, but played all the time in the neighbor's tree. However, the neighbor tried to poison it to have it chopped down, but Jeanette, who loved the tree, started living in it so that a local law would have it protected because of the tree constituting an habitat. After some conflict, the neighbor just gave up and moved out of town, while the Chipettes moved into the tree permanently.

The Chipmunks and Chipettes believe Simon is leaving permanently for a science institute, so they devise a plan to stop him from leaving: stealing his clothes, hiding his communication devices and sabotaging Dave's car, before locking Simon up in his closet to allow Alvin to take his place and ruin his interview with the science institute's envoy. Everything goes according to plan, but it is revealed that Simon was just leaving for a summer camp, so everyone ends up having to apologize to him.

It is discovered that Dave failed his math test and did not graduate from high school, so he has to go back to school with the Chipmunks and Chipettes to take math lessons. However, lacking interest, he starts misbehaving with Alvin, until Simon and Theodore get fed up with it and give him the lessons themselves, leading him to improve and devising a strategy to help Alvin improve as well. With his good results, Dave takes the final exam and passes, finally becoming a graduate.

Simon becomes friends with a new student, Jamie, with whom he shares interests. However, when Jamie realizes the popular kid in their family is Alvin, he ditches Simon to hang out with Alvin. Simon is upset, but Alvin is not really digging Jamie either; besides, Jamie soon realizes he does not have much fun around Alvin either, so he just ditches the Chipmunks entirely. In the end, Alvin tells Simon that Jamie is hypocritical and that it is his loss if he does not realize how cool Simon is.

After another dispute with Simon, Alvin convinces Dave to give him his own room after a test of maturity which he successfully passes. Alvin then moves to the only spare room in the house - the basement. However, the Chipettes soon realize the Chipmunks are unhappy and miss each other, so Brittany hints at Alvin that if he reverts back to immaturity, Dave will probably move him back to their common room. Alvin applies the plan immediately and is happy to get back with his brothers, and although they do sort of apologize to each other, the disputes soon resume.

Alvin leaves Theodore's bike in the rain, so it gets rusty and soon disintegrates. Looking to offer Theodore a new bike, the Chipmunks participate into a competition consisting in rounding up shopping carts left all around town and bringing them back to the supermarket. The episode then turns into a parody of Western movies with the school bully, Derek Smalls, stealing their "herd" of carts before being chased away with help from Miss Croner. Unfortunately, it is finally revealed that they only won a bike statuette.

The Chipmunks and Chipettes try to reduce their carbon footprint to win an ecology contest, in which the prize is a trip to Hawaii. However, as Jeanette is very concerned with the environment, she spreads word of the contest, but the others are so obsessed with winning that they go to extreme lengths, including playing dirty, to be victorious, much to Jeanette's despair. In the end, they lose anyway, but decide to pursue their efforts, to Jeanette's satisfaction, even though they are actually only aiming to win next year's contest.

Alvin is in love with a girl named Vanessa and to win her over he decides to babysit her pet myna bird Birdie. However, the myna proves to be a blabbermouth who annoys everyone, including Alvin who acts mean with him, so the bird starts repeating that Alvin hates him. Afraid he will say that to Vanessa, Alvin acts very nice with Birdie, but fails to reach a conclusive result. Thankfully, when getting Birdie back to Vanessa, the myna repeats a compliment Alvin said earlier about her, so she accepts his offer to go on a date with him.

Fashionista Marina Rodenchia launches a contest to create a hat, in which Brittany and Jeanette (temporarily a fashion icon by pure chance) enlist; but their rivalry turns bitter. When Jeanette presents her creation, a hat made out of recycled material, the others are embarrassed by the disastrous result. They ultimately manage to convince Brittany that family is more important than the contest, so she saves her sister the public humiliation by creating another eco-friendly hat of which she shares creation credit with Jeanette.

Theodore wants to be a superhero and Alvin lets him believe he himself is one to take advantage of him. Simon gets on his back, but unwilling to burst Theodore's bubble, they stage a fight with a fake supervillain in which Theodore is victorious. Back home, however, Theodore wants more, so they confess the truth to him. Theodore refuses to believe it and goes on fighting crime, capturing an actual burglar by pure chance. Thankfully he still gives up on being a superhero, but not without taking revenge on Alvin for abusing him.

Simon is unable to kiss his co-star in the school play, so Alvin and he decide to secretly switch places at the crucial moment. It works, but Simon then becomes extremely popular with the girls at school, much to his chagrin; even telling the truth about what happened does not work. Ultimately, he chooses to ridicule himself by not being able to kiss his co-star again during the next performance, with Alvin replacing him in front of everyone. Unfortunately, once again the girls are impressed by Simon's honesty, and their chase resumes...

Dave is worn out, so Alvin secretly decides to offer him a vacation in Hawaii by renting the house while he is away on a business trip. Unfortunately, the guests arrive a day early so Alvin, with help from the others, try to hide their presence from Dave but the encounter inevitably comes. Dave apologizes to the guests, but decides not to ground Alvin when he learns of his motive. However, this changes quickly when other guests arrive, as Alvin had to rent the house several times in order to pay for the expensive trip...

Miss Smith pairs Alvin and Simon for the science fair; after a random string of events Alvin comes to create a substance which, when sprayed on Theodore, turns him into a several-stories high Chipmunk. The newly-created Theozilla wreaks havoc in the city, but Alvin and Simon manage to turn him back to normal, while Miss Smith is blamed for the disaster. However, she wakes up, revealing it was just a nightmare of hers.

After the class's cell phones are confiscated, they mysteriously disappear and Alvin is framed for the crime. However, he is allowed to search for the true culprit before the end of the day, and with help from Simon and later Theodore, they discover the thief was the principal's dog who took away the phones and tried to bury them. Alvin gets them back just in time and clears his name.

The Chipmunks and the Chipettes have a soccer game, however, they cannot decide who will be the coach, so they all take turns in the role and fail. In the end, everyone gets fed up with it and quits, with only Alvin and Eleanor going to the game. However, the others get re-motivated when two guys make fun of them and they join back with Alvin and Eleanor. During the game, they all apply the methods they tried during training and working together they crush the opponent's team.

Alvin wants to become a reality TV star and tries different approaches to win over the executives of a media company. Unable to find a good formula, he enlists an extremely enthusiastic Brittany on the condition that she gets to be the co-star of the show, and they finally pull off a great recording. However, Simon, hostile to the whole idea, butts in and tells the executives that the recordings were made for a science study and cannot be published, ultimately ruining Alvin and Brittany's projects.

Eleanor bakes a cake for the school bake-off, however, while she is away buying some last-minute ingredients, the others devour it. When they realize what they just did, they try to re-create the cake but when they bring their cake to the bake-off, the judges do not like it. Thankfully, Alvin retrieves one last portion of the original cake and brings it to the judges just in time; they love it so much that Eleanor wins hands down. Afterwards, the others confess the truth and Eleanor forgives them.

The Chipmunks and Chipettes learn that Dave wants to sell the house; they are so upset that they rig the house with special effects so potential buyers will believe that it is haunted and be scared away. This works until a ghost enthusiast buys the house; the Chipmunks then have an explanation with Dave where they discover he believed that they wanted to move, so they tell him that they did not. However, in the evening, the ghost enthusiast is revealed to work for a TV show, and when he finds out that the house is not actually haunted, he cancels the deal.

Once again taking advantage of Theodore's ingenuity, Alvin makes him believe that he has magical powers. He notably uses this belief to boost Theodore's confidence during soccer training, which leads him to join the team. Meanwhile, Derek bullies Theodore, but he tells him that Alvin will get back at him with his powers. Alvin shows up at the arranged confrontation and manages to frighten Derek with help from Simon. From then on, Alvin and Simon try to convince Theodore that Alvin does not have magical powers, but it is apparently going to take time.

The Chipmunks find a baby bird which has fallen from its tree and once nursed, it just sticks to Alvin who becomes attached to it and names it "Warbie". However, with help from Simon, Alvin tries to teach Warbie how to survive on its own but the bird does not listen. Ultimately, Warbie hurts itself in a fit of panic and the vet takes it away. A few days later, the vet comes back and finds Warbie's nest, bringing it back to its rightful mother, and Alvin is somewhat disheartened to see the bird forget him so easily.

Alvin wants to compete in a survival show, but he injures himself during training. His competitor, Derek, makes fun of him, angering Simon who decides to compete instead. However, training demonstrates that he is physically unfit. During the competition, he uses his smarts and manages to keep up with Derek and during the final challenge, a race, Derek finds a way to cheat and win, but the show's host, who saw everything, disqualifies Derek, making Simon the winner.

Brittany wins a rare expensive handbag from Marina Rodenchia, but Alvin accidentally destroys it. Brittany is so upset that Alvin promises to replace it. After trying unsuccessfully to trick Brittany, he decides to walk straight to Rodenchia's shop, hoping that she will agree to give him another one; however, she will only give one to him if he does a photoshoot for a line of child's clothing, to which Alvin reluctantly agrees. Rodenchia then keeps her promise and Alvin is able to make it up with Brittany.

Brittany has a new calling: painting. It happens that Marina Rodenchia loves her works, but only after the others (originally accidentally) trash them. However, when Rodenchia calls Brittany to give a talk at her gallery, the others try to steal her works to prevent Brittany from discovering the truth. They are caught by the police, but it does not matter, as Rodenchia's infatuation with Brittany's works is over.

When Dave starts hanging out a lot with Julie, the Chipmunks get jealous and then paranoid, believing that she wants to move in, so they try to separate them. However, when they go vastly overboard, Dave has to tell them that Julie was just helping him overcome writer's block.

The Chipmunks find a dog and decide to keep it; however, they run into trouble when they have to hide it from Dave (who believe they are not responsible enough to have a pet) with Theodore taking the blame for the dog's damage around the house. Ultimately, they find out the dog already has an owner and Theodore regretfully brings it back to her.

Theodore is tricked into caring after a supposed dragon egg. Although initially dismissive, Alvin and Simon have to help him after Dave orders them so, as he understands that it is important to Theodore. For their own reasons, but most of all to protect Theodore from the disappointment, Alvin and Simon enlist Brittany's help and try to steal the egg, only to discover it hatched offscreen, therefore proving to their amazement that the dragon egg story was true all along.

Derek bullies around again, this time a group of nerds that Simon is friends with. Alvin decides to teach them to stand up for themselves, but it works too well and the nerds turn into bullies themselves. Ultimately, Alvin, needing an annoyed Simon's help for an exam, decide to tell the nerds' mothers about their behaviour and the mothers sanction their kids, turning them back to normal.

Alvin befriends a shy new student called Emil and teaches him to be cool. However, Theodore meanwhile gets persuaded that Emil is a thief and a dangerous runaway student hunted by the FBI, eventually contaminating Simon with his paranoia. It turns into a conflict between Theodore and Emil, but Alvin eventually settle things down, and Theodore and Simon get persuaded they were wrong. However, when Emil leaves, supposedly to go back to his home country, FBI agents knock at the door and reveal that Theodore was right all along...

Simon's fledgling magic show does not attract any audiences and is mocked by Alvin, and things soon get worse when Alvin finds a book of magic tricks before setting up his own show, which quickly builds success thanks to his showmanship. Upset, Simon challenges Alvin in front of everyone to a magic duel and humiliates him. Alvin is amazed, but Simon tells him he set up the whole situation with help from friends, even writing the book that Alvin found, just to get back at him and simultaneously build up an audience.

Alvin needs money, so he becomes substitute music teacher for Miss Smith. However, he proves to be a poor teacher and quickly gives up to just have fun with his students. When the time to perform in front of an audience comes, however, he panics but manages to reach a deal with the students so they accept to learn a bit. The performance proves to be pretty poor, but the Chipmunks' and Chipettes' vocals make up for it somewhat and Alvin keeps his job.

Jeanette wants to shoot an existential student film for a contest with Dave as the lead, but the others' different conceptions about what the film should be about and Dave's clumsiness in front of the camera ruin it. Eventually, the others try to hastily assemble a film for her, but she informs them that she just made a documentary about an ant instead. Although her film comes last in the contest, Jeanette already starts working on a new one.

The Chipmunks notice that Dave leaves often for business lately, so they follow him, and to their horror they discover a wax figure of him, believing it is Dave himself turned into wax because of a horror movie they watched. They abduct the figure to bring it to a doctor, but after damaging it they eventually discover the truth. Back home, Dave reveals that wax statues of the four of them are to be inducted into the Madame Tussauds museum, although his own statue will have to be remade after being damaged by unknown individuals...

After eavesdropping on Alvin complimenting her, Brittany falls in love with him. However, her drastically altered behaviour creeps him out and because of one of his nerd classmates, he believes her to be taken over by a body snatcher. Soon, when he catches a glimpse of Brittany talking about her feelings to Dave, he believes him to be taken over too. After a few shenanigans, he tells Brittany directly about his belief and she finds his immaturity so appalling that her feelings are crushed right away.

Simon wants to join the school newspaper, but does not have a great story to submit. Alvin and Theodore lead him to investigate Miss Smith, whom they believe is a secret agent, but his investigation proves otherwise. Therefore, Alvin and Theodore manage to enlist Miss Smith and some friends of hers to enact a secret mission, unbeknownst to Simon, so he gets material for a story. Thanks to them, Simon becomes the newspaper's editor.

Alvin falls in love with a new girl called Mary-Anne; since she likes babies, he dresses Theodore up as one and lets him hang out with her twin little brothers to woo her. However, the two kids are mean to Theodore. Besides, Alvin soon has to babysit them, with poor Theodore having to play both his own role and that of the baby after a quid pro quo; the situation quickly gets out of hand and Mary-Anne ultimately leaves infuriated with her brothers.

Alvin wishes to build a plane out of toothpicks for Dave to replace the one he had as a child, but for that he needs Theodore to clean the basement in his stead. However, Theodore wants tickets to a Talking Teddy show in exchange and then things start to get increasingly complex with Alvin soon finding himself caught in a chain of services to give to various main and secondary characters. In the end, he manages to get his toothpicks, although he forgets Simon's service along the way.

Simon enters a contest to create a superhero character, the winner of which will see his creation turned into a toy. However, Alvin forces himself into being Simon's sidekick and Simon creates a lame costume for him so that he will not steal the spotlight again. Not only does Alvin still manage to do so, but Simon discovers that the toy creator only created the contest to steal ideas easily. Alvin and Simon manage to capture him and a forgiving Alvin lets Simon get the credit for the arrest.

Someone is stealing all the bicycles on the eve of a bicycle race. After Alvin's bike is stolen, he forces himself into being the partner of the local policeman, Officer Dangus, and they manage with help from Simon to catch the culprit - Bocarter Humphrey. However, thanks to his father's wealth, Bocarter is soon out, but Alvin gets a new bike thanks to Dangus and Alvin and Bocarter enter the race. Although Bocarter tries to cheat, Alvin ultimately wins.

Feeling left out, Alvin manages to convince Dave to spend a weekend with him doing whatever he wants if he does all his chores for a month. Unfortunately for Dave, Alvin pulls it off and soon they are off doing dangerous activities. After some circumstances, they end up in jail and Dave tells Alvin he had the worst weekend of his life. However, he soon regrets his words and apologizes to Alvin, who misinterprets it as an encouragement to go on further dangerous activities together.

Simon is inadvertently hypnotized, so his IQ drops whenever he hears a bell. The next day, he participates in a knowledge contest, but the bell sound emitted by the buzzers turn him into an idiot every other round. Midway through, Alvin figures everything out and hacks the computer for the contest so that the buzzers emit other sounds and Simon wins. The next day, the hypnotist comes back and turns Simon back to normal.

After Alvin's phone is confiscated, he manages to convince Simon to lend him an experimental nanophone Simon invented to replace it. However, the nanophone is soon damaged and it develops the ability to listen to everyone else's phone calls. Alvin then starts telling everyone the info he gathers and Brittany and Simon decide to strike back at him by tricking him into believing his head will explode if he keeps using the nanophone. In a fit of panic, Alvin destroys it and does not even want to get his original phone back once the punishment is lifted.

The day after Halloween, the Chipmunks' and Chipettes' candy harvest is stolen. They get convinced that a creature called the "Switch Witch" took them and after some investigations, they think Miss Croner is the witch. They follow her to a cabin in the woods, where it is revealed that it was a setup by Dave and Miss Croner in order to make their Halloween funnier.

Alvin breaks into Simon's hidden saferoom in their room and runs into an invention which accidentally creates a clone of himself. However, the clone proves to be ignorant and destructive and soon ruins Alvin's life. In the end, the clone creates an army of copies of himself with the invention and just as the clones are about to overrun the Chipmunks, Alvin wakes up, revealing that he was just dreaming.

Dave and Alvin help a man with a flat tire, but during this time Alvin makes up a lie that he has an older brother racing in China. This starts a chain reaction where Dave, Alvin and then the Chipmunks have to cover up for each other as the lie becomes bigger and bigger and spreads at school. In the end, Miss Smith just summons everyone at school and slams Dave for sending the wrong message to his sons.

A parasitic toad accidentally settles on Brittany's face and Alvin and her are charged by Miss Smith to keep it alive until the specialist arrives to take it off. However, Brittany needs to adopt a lifestyle drastically opposite to her habits and her relationship with Alvin quickly gets conflictuous. The aggressive environment they create is harmful to the toad and when they realize it, they decide to finally collaborate, leading to the toad's recovery and survival until the specialist arrives.

The Chipmunks and Chipettes are mistakenly led to believe one of the nerds, Kevin, has a crush on one of the Chipettes. Not knowing which one, the Chipettes all act invasive with Kevin to frighten him, while the Chipmunks, who are revealed to all have crushes on the Chipettes, look on in confusion and concern. Kevin, overwhelmed, ultimately reveals that he actually likes another girl called Pamela. Relieved, the Chipmunks and Chipettes help him by organizing a date between the two.

Simon writes a message to his teacher but regrets it when it accidentally gets sent by Alvin.

Theodore uses Simon's new device to help him say "No".

Theodore takes Dave's music box out of his desk by mistake.

Alvin and Simon must save Theodore from being mailed off to somewhere else.

Alvin pushes Miss Smith too far, forcing her to quit as a result. Alvin must now find a way to bring her back.

After footage of Alvin and Simon being scared goes viral, they try to scare the Chipettes even worse.

The Chipettes decide to become superheroes, but it becomes too hard for them.

Alvin must do a book report on the early settlers for his final exam. Otherwise, he will be held back for a year.

Kevin fears that his birthday party is going to be lame, so Alvin decides to throw a paintball party in his house. Eleanor wants to join with the boys, but the boys will not let her play with them because no girls are allowed. At the end Theodore asks Eleanor to replace him and defeat the boys. Eleanor proves to them that girls can beat boys if they want. In school, Derek asked Eleanor if she wants to be in his team, but Eleanor says that she is busy.

The boys decide to create a bigger and better computer in order to beat Bocarter at his own game.

When a hot, fab lookalike trio of performers called "The Hipmunks" soars to the top of the charts and threatens to eclipse the boys' popularity, the Chipmunks scheme to learn just what this group's angle is.

Alvin and Derek have to get along with each other-or else the school dance will be cancelled.

Brittany sprains her ankle after running in the hallway and running directly into Simon. After this incident occurs, Brittany is asked to find someone to temporarily replace her as the principal's assistant. Jeanette is recommended by Brittany and soon they are at odds with each other after Brittany discovers Jeanette's filing system is disorganized.

Alvin overhears Bocarter's father is going to build his theater model for drama class for him, so he enlists Dave to help him with his model. Dave initially refuses, but decides to help Alvin after Alvin sneaks into Bocarter's house and sees Bocarter's professional model. After some sneaking around from both parties, Alvin ends up building his model on his own. On the day that the project is due, Alvin gets an A+ only because he was the only student in the class who built his model on his own.

Miss Smith asks the class to perform chivalrous acts and bring back proof of their deeds as homework for the medieval lesson. Theodore is initially very enthusiastic about it but things do not turn out as he had hoped. Meanwhile, Alvin, feeling bad for his brother, sets up a situation for Theodore to perform a chivalrous act with help from Brittany but there too, things get out of hand. In the end, Miss Smith regrets having given such homework when she checks the (overall disastrous) results.

Alvin and Simon create a fake snake to help Dave get over his fear of snakes.

The Chipmunks help an owner fix up his rundown summer camp and his broken relationship with his brother.

Alvin is convinced that Theodore cursed him so that he can never lie again and cannot help himself from blabbing the truth.

After Brittany, Jeanette and Eleanor release a video that goes viral, Alvin, Simon and Theodore try to top it.

Simon falls ill and asks Alvin and Theodore not to go see a new movie without him, but Alvin is unable to resist.

Alvin borrows Simon's invisibility suit, but gets trapped in it when the zipper gets stuck.

After Theodore makes a wish, the Chipmunks try to learn what it was so that they can make it come true.

Jeanette wants to turn the vacant lot behind the school into a garden. Bocarter tries to stop her.

Alvin finds a treasure map in Miss Croner's basement. The Chipmunks set out on a treasure hunt.

Alvin and Brittany deliver vastly different versions of why the fire alarm went off at school.

Convinced that a zombie invasion is imminent, Alvin and Theodore go all out in attempt to protect their loved ones.

When one of Simon's inventions malfunctions, Alvin and Jeanette switch bodies and have to live as each other while Simon rebuilds it.

Feeling bad for Cheesy on Valentine's Day, Theodore makes a fake online alias and pretends to be a girl.

Alvin and Brittany are convinced that Simon has vanished back in time and go all out in an attempt to bring him back.

Alvin's prank call gets out of hand when the person on the other line vows to track him down.

Dave, Simon and Theodore are worried for Alvin's safety after Alvin enters a karate contest against a fierce adult.

When Alvin suspects Simon is Dave's favorite, he and Theodore challenge Simon to a go-cart race to win back Dave's favor, built can'T seem to build anything.

Everyone thinks that Simon has lost his mind after he fails a school test and moves into a tree for some alone time.

Alvin worries about his bad report card and does everything he can to intercept the mail before Dave sees it.

Theodore is stuck taking care of Miss Croner's cats during a week that Dave wants the boys to focus only on school. Meanwhile, the town enters Dave in a good samaritan contest.

The Chipettes challenge the Chipmunks to go for three hours without their favorite things.

When Alvin is accused of revealing spoilers for everyone's favorite TV show, he agrees not to speak for 24 hours.

When Alvin and Simon think Theodore's pet goldfish has died, they go all out to replace it before he notices.

Alvin and Brittany learn the difficulties of parenting when they have to care for a robot baby for a school assignment.

When Alvin's soccer team struggles to win games, the coach makes the team learn ballet in order to help with their conditioning.

When Simon goes missing and nobody seems to remember who he is, Alvin worries that he is losing his mind.

When the girls at school cast votes for the cutest Chipmunk on the bathroom wall, Alvin worries about the results.

Theodore gives Dave an ugly handmade vest for his birthday and insists that he wear it to an upcoming business meeting.

When Theodore finds a winning lottery ticket, everyone has their own ideas on how the money should be spent.

Simon shockingly discovers he has been tagging private property in his sleep and his actions inspire a group of copycats.

Alvin's luck goes from bad to worse after Theodore finds a four-leaf clover.

Alvin gets a taste of his own medicine when he pulls one too many practical jokes on Simon.

After termites infest Miss Croner's home, she moves in with Dave and the Chipmunks and drives everyone crazy.

When the boys accidentally break Dave's new flat-screen TV, they decide to become fugitives on the lam.

Jeanette and Eleanor act as Sherlock Holmes and Dr. Watson when Theodore's teddy bear mysteriously disappears.

Tired of taking orders from Dave, the boys move out and decide to build a tree house in the backyard.

Alvin and Simon become magnetized and inseparable after an invention of Simon's accidentally gets knocked over.

When the boys get stuck with Miss Miller as a baby sitter, they each take a crack at finding a replacement.

Alvin volunteers to caddy a charity golf tournament and surprisingly gets paired up with Miss Smith.

Alvin and Brittany get stuck alone at the school with a ghost they think roams the halls, or is it something else?

Alvin passes off a rock he found on the ground as a meteor for a science project and gets some unwanted attention.

Dave discovers he's not too good at roughing it outdoors when he goes on a day hike with the Chipettes.

Alvin bets Bo Carter that alien life exists and only has a week to prove it or suffer embarrassing consequences.

When Alvin pranks Simon with a trick website making it look like Alvin is smarter, the chipettes prank Alvin back.

Dave gets temporary amnesia so the boys trick him into letting them skip school and go on a ski trip instead.

Theodore becomes obsessed with cleanliness after a speaker at school talks to the class about the danger of germs.

When Alvin thinks Theodore's teddy bear can tell the future, Alvin goes all out to make Talking Teddy his friend.

Brittany's furious when she thinks Alvin has been writing on her blog and vows to get him back, but was it Alvin?

Alvin lies to Theodore about a fake holiday to get out of chores, so Dave forces Alvin to make the holiday real.

Simon's experiment of how plants respond to positive or negative feedback creates a monster, and it's growing.

The town is under attack when Simon creates a drone that can not only deliver pizzas but has the ability to learn.

Alvin worries the munks are responsible for making Dave boring when they find out he used to be a rock star.

When Theodore's teddy bear, “Talking Teddy” gets bear-napped, the boys work with Officer Dangus to get him back.

When Alvin starts stealing the morning paper to sell at school, Dave blames the paperboy and refuses to pay up.