Over Run Over

While on patrol duty, EU sergeant Ling Sun-fung and her team are called to assist a criminal chase. A gun battle erupts and Sun-fung loses her father, who dies from a stray bullet to the head. Sun-fung continues the pursuit, but a strange natural phenomena suddenly turns her away, taking her back to April 1—three days prior to the incident. Realising that she has traveled back in time, she uses this opportunity to save her father's life.

Village chief "Ditch", an informant for the ICAC, discovers Sun-fung's special ability and teams up with her to investigate a corrupted cop. Unfortunately, their persistent disruption to the timeline causes severe butterfly effects, with unsettling consequences. Sun-fung learns that her power to change the past does not make her able to control the future.[1]

• Vincent Wong as Hugo Kwan Ding-ming (關鼎名; Gwaan Dingming) — also known as Ditch (渠頭), a wealthy village chief. He works as an informant for the ICAC and is aware of Sun-fung's time-travelling ability.

Ditch gets closed to Ho Chin-cheung, a rich man that runs on real estate business, to collect his criminal evidence. He has saved Sun-fung many times by the third time travel, but was suspected by Sun-fung that he is behind the four gangsters. However by the fifth time travel of Sun-fung, his identity is revealed by Sun-fung.

Ditch is nearly killed by Chin-cheung in the fifth time travel. His identity is discovered by Kam Ye, who used to eventually discovered his recruiting by ICAC. He is saved by Sau-kei who is asked to look after him by Sun-fung. He finally discovers the time travel ability of Sun-fung. He goes to the electric tower by midnight of April 3rd to complete his tasks by going the sixth time travel.

During the sixth time travel, Ditch does something that causes a butterfly effect that eventually burns the BBQ field by an explosion which did by Hong, a closed friend of Gwong and former student of Hoi.

During the seventh time travel, the problem is solved.

In the ninth time travel, he kidnaps Chin-cheung and exposes his identity. Ditch steals Chin-cheung's narcotics in order to make Chin-cheung and the corrupt cop fight each other, but Chin-cheung is easily killed by the corrupt cop. Ditch then failed in his fight against the corrupt cop and nearly died.

During the tenth time travel, he discovers the corrupt cop is Ching, but later finds out Ching is just covering his father Kwok Wai-Shing. He and Wai Ye together knock out Wai-shing in the shipyard, but Ching revenges on the third day which causes Ling and Ching's death. He decides to time travel again, alone, in order to see Ling alive.

During the eleventh time travel, while Ling no longer remembers him, he resolves all the major issues as discovered in previous time travels. He gets back the necklace on the fourth day in Ling's yard which seems to reawaken her memory of previous time travels.

• Tracy Chu as WSGT Ling Sun-Fung (凌晨風; jyutping: Ling Sanfung) — a sergeant in HKP's Emergency Unit. She discovers an electricity pylon where a time portal would open at 00:00:00 on April 4, allowing her to travel back in time to the same day, April 1.

In the original timeline, her father was killed by a crossfire between her EU team and the four heavily armed gangsters on April 3rd. She discovered the time portal by accident, and was miraculously brought back in time to April 1st. In this her first time travel, she tried to prevent her father's death but failed.

In her second time travel, she finally rescues her father from the crossfire, but her colleague was seemingly killed by head of the gang. The third time travelling, she and Wai Ye successfully arrest the four gangsters at the 1st day's evening which prevents her father's death. She also realizes that her colleague was actually killed by his jealous and mentally unstable fiancée, and manages to stop the homicide before it happens. However, she also discovers that an undercover gets killed in the process, compelling her to travel back in time to save him.

In her fourth time travel, Fung discovers that Sau-Kei is the undercover and Chin-cheung is behind the crimes. However, there are more than one undercover that hide in Chin-cheung's triad. She discovers another undercover during her fifth time travel. Even when she discovers Ditch is an ICAC informant, she does not trust him completely. Ditch follows Ling to the tower to go for the sixth time travel.

In her sixth time travel, Ling co-operates with Ditch in order to dig out the corrupted police officer. Unfortunately, her younger brother Gwong is severely wounded by an explosion, and her friend is nearly killed by Chin-cheung, while the corrupted officer remains unknown. These force Ling and Ditch to travel back in time again.

In her seventh time travel, Ling throws the bomb out of harm's way in the nick of time, but sustains lower back injury. Her father Hoi mistakenly assumes that his wife is having an affair with Chow Bing-Yan, a wealthy business man running a real estate project with Chin-cheung. Hoi is later accused for the murder of Bing-Yan, and this forces Ling to go back in time again.

In her eighth time travel, Ling and Ditch mistakenly thought Wai Ye as the corrupt cop, but during the ninth time travel, they confirm that Wai Ye is innocent. By the 3rd day, Ling, Ditch and Wai Ye fought with a corrupt cop in the shipyard. After the lost battle against a corrupt cop, it forced them to go to the tenth time travel.

In the tenth time travel, they finally realize the corrupt cop is Ching's father, Kwok Wai-shing. Ling dies with Ching together by the third day after Wai-shing's death.

In the eleventh time travel which she doesn't travel at all, she has no memory of any previous time travels, but appears to "remember" it all after midnight on April 4th upon picking up an hourglass necklace which mysteriously appeared on her front yard.

• Benjamin Yuen as SGT Kwok Sheung-ching (郭尚正; Gwok Soengzing) — a sergeant in HKP's Emergency Unit, and Sun-fung's boyfriend.

Sheung-Ching leads another EU team, and he had a one-night stand with Chi-ting before dating Sun-fung. In one timeline, when the identity of the corrupted cop is finally known, Sheung-Ching tries to protect the corrupted cop and ends up killing Sun-fung.

Sheung-Ching is discovered to be a former SDU member with Wai Ye and two siblings who are actually under his father's command.

He later follows Wai Ye after a fight against them and discovers the secret about the electric tower and enters the time portal after them. He threatens Wai Ye to help him but finally failed.

• Christine Kuo as Joyce Cheung (章巧悅; Zoeng Haujyut) — Ditch's ex-girlfriend.

Joyce is an investment consultant and used to be with Ditch 2 years ago. She is threaten to have sex with Ivan who is a moneywashing banker. She hacked into his account and used his money to invest but lost, and it's discovered by Ivan later. Ivan threaten her with not telling the police.

• Rebecca Zhu as Fung Chi-ching (馮芷晴; Fung Zicing) — Wai's wife.

Chi-ching is Wai's wife who is dying of cancer after many failed medical treatments. She used to be a social worker and has help a lot of people before the disease. She died trying to change a light bulb by herself during Sun-fung's fifth time travel.

• Pal Sinn as PC Chan King-wai (陳勁威; Can Gingwai) — known as Wai Ye (威爺; "Lord Wai"), the van leader of Sun-fung's EU team.

He is a former SDU member. He keeps silent on the work and get off on time. Wai Ye saves Sun-fung and arrests the four gangsters in Sun-fung's third time travel.

In Sun-fung's seventh time travel, when he is still in the car, he sees Ling talking to Ditch, feeling there is something between them. He later talks to Ling, knowing that she has something to do with Ditch. He secretly monitor Ling's phone, discovering that Ling and Ditch are the time travellers and they are trying to dig out the corrupted police officer and arrest Ho Chin-cheung.

King-wai uses all his money for curing his wife's cancer, which force his family to move to a worse house. Once a real estate retailer calls him and offers a new house for him, Chi-ching worries if this could be affordable. King-wai later discovers it's from Chin-cheung which makes he to be the suspected corrupted officer. He later reveals to Ling and Ditch that he has been time travelling a hundred times before them.

• Zoie Tam as Crystal Lee Chi-ting (李姿婷; Lei Ziting) — a news reporter, and Sun-fung's close friend.

Crystal is a journalist, she helps Fung to get a lot of intels from the second time travel. But it is revealed that she had a one-night stand with Fung's boyfriend Ching.

In the fifth time travel, for safety sake, Ling stops asking her to dig out information for her. However, for benefits, Crystal discovers something is hidden from Ling and which is related to Chin-cheung, so she decides to go digging herself.

Crystal tries to co-operate with Ditch and dig out the crime information of Chin-cheung, but exposed by Chin-cheung. Chin-cheung threatens to kill her in the sixth time travel. She escapes from the boat and is rescued by Ling's boyfriend Ching.

After being rescued by Ching in the sixth time travel, Crystal feels there is something still leaves between Ching and herself. She was killed during on the tenth time travel by the corrupted cop Wai-Shing about the secrets hidden in the USB flash drive.

• Moon Lau as Ho Siu-mei (賀小美; Ho Siumei) — a model and Sun-fung's friend. She is the rich man Ho Chin-cheung's younger sister.
• Vincent Lam as Tom Ho Chin-cheung (賀展祥; Ho Zincoeng) — Siu-mei's older brother.

Chin-cheung is a wealthy richman on surface, but indeed he is a triad boss. He was trying to sell the narcotics to the four heavily armed gangsters, but the four are arrested because of Sun-fung's intel. After that, Chin-cheung discovers that there is a traitor among them. He seeks a new narcotic buyer and the traitor to be executed.

He has a mole inside the police force, and it's discovered by the ICAC. He was trying to kill Ditch during the fourth and fifth time travel. With Kam-Ye's help, he is able to discover that Ditch is the informant for ICAC in the fourth and fifth time travels. Chin-cheung tries to kill Ling in the third time travel. By the fourth time travel, it is changed to be Crystal. Chin-cheung also tries to kill Crystal during the sixth time travel, but failed. And then Chin-cheung becomes interested in Crystal.

• Law Lok-lam as Ling Hoi (凌海; Ling Hoi) — Sun-Fung and Sun-Gwong's father. Ching-Yin's husband.

Hoi is a former school teacher, he moves to Kam Fat Wai when he is retired with his family. He loves his daughter Sun-fung. He and goes up a hill to get some wild honey for her, but is shot under the crossfire between San-fung's team and the four gangsters in the original timeline.

Sun-fung travels back in order to save him, but in the first time travel, he is still killed by a gunshot by Sun-fung. He is only successfully saved from the second time travel and on.

During the seventh time travel, it is revealed that Ching-yin was pregnant with Fung when she married to Hoi.

• Rosanne Lui as Siu Ching-yin (蕭青燕; Siu Chingyīn) — Sun-fung and Sun-gwong's mother. Ling Hoi's wife.

Ching-yin is unhappy to move to the countryside, and she blames Hoi for this often. She is Chow Bing-yan's ex-girlfriend, she left him to marry Hoi while she is pregnant with Ling.

• Clayton Li as Ling Sun-gwong (凌晨光; Ling Sangwong) — Ching-yin and Ling Hoi's son and Sun-fung's younger brother. He has a pet beetle named Bobby.

Gwong is the only family member to believe his sister's time travel. He entered into a sham marriage with a prostitute from mainland China until his sister finds out during the second time travel. In the sixth time travel, he is deadly injured by an explosion which caused his sister to go for the seventh time travel to prevent this tragedy.

In the seventh time travel, it is revealed that the explosion is made by his friend Hong. He helps Hong to make the bomb, and then he regrets.

• Myolie Wu was originally offered the lead role to play Ling Sun-fung, but declined as she was planning not to renew her contract with TVB. After Wu declined the drama Kate Tsui was named as a possible replacement, but since Tsui also decided not to renew her contract with TVB Tracy Chu was eventually cast as the lead.[2][3]
• Kenny Wong was originally cast in the role, Chan King Wai, but due to a schedule clash, Pal Sinn replaced him.
• The costume fitting ceremony was held on April 2, 2015 12:30 pm at Tseung Kwan O TVB City Studio One Common Room.[4]
• The blessing ceremony was held on April 16, 2015 3:00 pm at Tseung Kwan O TVB City Studio 16.
• Filming took place from April till July 2015, entirely on location in Hong Kong.

April 3, 2016: No episode broadcast due to airing 34th Hong Kong Film Award.

•  Malaysia - 8TV (Malaysia) (13 March - 11 April 2018)

• Over Run Over Official TVB website (in Chinese)