Honey, I Blew Up the Kid

Three years after inventor Wayne Szalinski accidentally shrunk his and his next door neighbor's kids, his family have moved to Nevada and have welcomed a new son, mischievous two-year old Adam. One day, Wayne's wife, Diane, leaves with their daughter, Amy, to help her settle in her dorm at college, leaving Wayne to look after Adam and their teenage son, Nick, who struggles with puberty. He has developed a crush on Mandy Park, who Wayne later arranges to babysit Adam. The next day, Wayne takes Nick and Adam to Sterling Labs, where he has constructed an advanced derivative of his shrink ray which could make objects grow. He tests it out on Adam's favorite toy, Big Bunny. However, when his and Nick's backs are turned, Adam attempts to retrieve it and is zapped by the machine, which appears to short circuit and not enlarge the targeted object.

Back home, Adam and Big Bunny are exposed to electrical waves from the microwave oven and grow in size, now seven feet tall. Wayne and Nick try to take him back to the lab to reverse the process, but are caught and kicked out by Wayne's coworker, Dr. Charles Hendrickson, who dislikes him and wants to take over Wayne's invention for himself. Diane returns home early and discovers what happened, and she, Wayne, and Nick have a hard time trying to take care of the large Adam. Later, Wayne and Diane drive to a warehouse and retrieve Wayne's first prototype to turn Adam back to normal, with Wayne unintentionally test firing his original prototype on a pair of Nevada Highway Patrol motorcycle troopers pursuing his van for speeding to make sure it still worked before Diane orders him to return them to normal, leaving the troopers completely spooked by the experience. When Mandy arrives to babysit Adam, she panics and faints, forcing Nick to tie her to a chair and gags her so she cannot run away or scream. As he explains the situation to her, Adam is exposed to the television's electrical waves and grows to fourteen feet before escaping through a wall.

Nick and Mandy search for him, but are taken into custody, with Adam placed into a truck. Wayne and Diane return home, finding the smug Dr. Hendrickson waiting for them. He has summoned Clifford Sterling, the company chairman, with the plan to fire Wayne, have him and Diane arrested, and experiment on Adam. Sterling arrives, praises Wayne when he admits his mistake, and pledges to help Adam while firing Dr. Hendrickson, much to Wayne's and Diane's amazement. At the same time, the truck carrying Adam passes by high voltage lines, exposing him to more electrical waves and causing him to grow even larger, escaping confinement. He mistakes Nick and Mandy for toys and puts them in his overalls pocket before heading for Las Vegas, pursued by his parents and the authorities. Wayne and Clifford figure out the cause of his growth and realize that exposure to Las Vegas' neon lights will make him grow bigger than ever.

The infuriated Dr. Hendrickson turns to board director Terrence Wheeler and they plan to start a boardroom coup to take Sterling out of power. With his permission, Dr. Hendrickson forcefully boards a military helicopter to attempt to tranquilize Adam, despite the pilot's reluctance. Wayne is determined to use his shrinking machine to shrink Adam back to normal, but needs him to stand still for twelve seconds so he can be shrunk. At first, he tries using Big Bunny to pacify him, but it backfires when Wayne suggests for Adam to take a nap (which the baby hates). After growing to 112 feet and wandering through Las Vegas, causing a panic among the crowd, he pursues an ice cream truck driven by Marshall Brooks to distract him away from the city while Sterling has the various hotels and casinos shut off their lights to avoid making Adam grow more. However, Adam then heads towards the Hard Rock Café, where he plays the lit up guitar. Diane realizes Adam just wants to play and doesn't fully acknowledge the damage he's causing, and deduces he will behave should she be enlarged as well. Dr. Hendrickson arrives in the helicopter and starts shooting tranquilizer cartridges at Adam, hitting the guitar instead, causing Adam to cry out in pain of the electric shock. As the panicked crowd begins to feel sorry for Adam and Dr. Hendrickson attempts to strike again, a giant-sized Diane arrives and stops the helicopter. She then comforts Adam and manages to get him to stand still for the needed time period for the shrinking ray to work. Wayne then fires it, returning them to normal size. Dr. Hendrickson arrives and attempts to justify his actions, but a furious Diane knocks him out cold with a punch to the face.

Wayne and Diane then realize that Nick and Mandy had somehow disappeared from Adam's overalls pocket. It is then revealed that the two teens, along with the convertible that Adam retrieved during his rampage, have been shrunk to the size of insects. They are quickly found by Wayne, who decides to give them a few minutes of privacy before returning them to normal size. The only problem left now pointed out by a state trooper with the Szalinskis is how to shrink the gigantic Big Bunny.

• Rick Moranis as Wayne Szalinski, a wacky inventor.
• Marcia Strassman as Diane Szalinski, Wayne's wife.
• Lloyd Bridges as Clifford Sterling, the president of Sterling Labs.
• Robert Oliveri as Nick Szalinski, Wayne and Diane's teenage son (2nd child).
• John Shea as Dr. Charles Hendrickson, Wayne's insolent coworker.
• Daniel and Joshua Shalikar as Adam Szalinski, Wayne and Diane's two-year-old son (3rd child).
• Keri Russell as Mandy Park, Adam's babysitter and Nick's love interest.
• Ron Canada as U. S. Marshall Preston Brooks
• Amy O'Neill as Amy Szalinski, Wayne and Diane's daughter (1st child).
• Linda Carlson as nosy neighbor
• Leslie Neale as Constance Winters
• Gregory Sierra as Terence Wheeler, a board member at Sterling Labs who is allied with Dr. Hendrickson.
• Julia Sweeney as another nosy neighbor
• Michael Milhoan as Captain Ed Myerson, a military pilot who reluctantly pilots Dr. Hendrickson to confront Adam.

The film was not originally written as a sequel to Honey, I Shrunk the Kids. Originally titled Big Baby, it was about a toddler who grew to giant size by a freak accident involving a growth ray and eventually terrorized Las Vegas in a non-violent, yet Godzillaesque way. Disney saw the possibilities of making this into a sequel to the first film and rewrote the script. Whereas most of the characters from Big Baby were rewritten as characters from Honey, I Shrunk the Kids, there was no character in the original that "Amy Szalinski" could replace, so she is seen going away to college in the beginning of the film.

Prior to this, sequel development was offered to screenwriter and teacher David Trottier.[3]

Intrada Records released the record in 1992, in time for the film's release. The score was composed and conducted by Bruce Broughton, who would return to provide the score for Honey, I Shrunk the Audience. "Stayin Alive" by the Bee Gees appears in it. So does "Loco-Motion" by Carole King, Gerry Goffin, and "Ours If We Want It" written by Tom Snow and Mark Mueller. The soundtrack album consists of just the score. In 2017, the label released an expanded edition included Broughton's score for Off His Rockers, the animated short that preceded the film in cinemas.

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