A retro office comedy depicting the chaotic events that unfold in the late 1990s when Sammo Hung, a 30-year-old elite securities supervisor who only cares about work, goes undercover as a 20-year-old high school graduate employee at a securities firm where suspicious money flows are detected.
Maeng Se-na, a top star criminal lawyer who has been a fangirl for fifteen years, tries to prove her favorite idol’s innocence, who is suspected of murder.
The Mobile Investigative Unit (known as "MIU") of the Tokyo Metropolitan Police Department attempts to solve cases within 24 hours. Detective Kazumi Shima is selected as a new member of MIU. He is intelligent, with excellent observation and communication skills. Yet, he does not trust other people. He is unable to find a partner in MIU and is ordered to partner with Police Officer Ai Ibuki, who works at a police substation. Ibuki applied for MIU, but he failed. He is in excellent physical condition, but he lacks knowledge and experience as a detective. Shima learns about Ibuki's background and he becomes more nervous. Finally, Shima has his first meeting with Ibuki.
Cha Su-yeol, a police officer who has long despised his mother, the notorious 'Mantis' serial killer, must reluctantly turn to her for help when a copycat killer emerges.
Kim Seo-hui’s life is changed forever when her politician father dies in a car crash and her husband disappears – all in one day. She enters the world of politics and join hands with small-town detective Jo Tae-sik to uncover the truth when she finds out that the car crash might not have been an accident after all.
When a popular anchorwoman for a prime time news show becomes the suspect in a murder case, her estranged husband - who has worked as a prosecutor in the past but now works as a public defender - decides to defend his wife.
In Hua'ao City, a brilliant detective with a flawless track record faces his toughest case yet when a string of seemingly perfect murders shakes the city. With no evidence, no witnesses, and a killer who vanishes without a trace, he must race against time to uncover the truth. As hidden dangers lurk in every corner, the line between hunter and hunted begins to blur.