Description: Inspectors Kyung-yoon CHO and Eun-joo PARK have been an inseparable duo ever since their police academy days. One day, the two inspectors take on the case of a young rich sports center owner, violently stabbed to death. The only clue to the case is a piece of body hair with AB blood type found at the scene. The two inspectors identify a swimming instructor as a major suspect to the case, but he later gets brutally murdered in the same way. It is later revealed that the two victims and a third party were once in the same army and committed a disgraceful act together. The police see the murders as a serial murder case in revenge for the victim at the time, 'Yoon-suh LEE'. But as the murderers identity slowly unfolds, inspector Kyung-yoon comes across another shocking mystery.
Description: Hwan, Ryu, Noh, Jung and Gyu. Five people, no connections or previous knowledge of each other. The mysterious X asks these five people to steal an important document inside a bank, the reward too appealing to refuse despite the difficult mission. But beyond everything they have to go through, who is this X, orchestrating the pieces of this puzzle like a puppet master?
Description: Byung-du is a 29-year-old career criminal, working for the middle-rank enforcer Sang-chul. Burdened with a terminally ill mother and taking care of younger siblings, Byung-du is feeling financial pressure as a substitute patriarch. When the big boss President Hwang is cornered by a corrupt prosecutor, Byung-du volunteers for a whack job and wins the big man's trust. However, his real trouble begins when friend Min-ho, an aspiring movie director, asks him to be a consultant for the latter's debut film.
Description: Ji-yeon is a successful lawyer and single mother to a seven-year-old girl. On her daughter’s field day, Ji-yeon competes with other parents in a running race and almost comes in the first place. However, nowhere could she find the girl who’s been watching and rooting for her mother to win. Later that day, Ji-yeon’s receives a phone call from an anonymous man, who tells her he has her daughter in custody and proposes a deal. To see her daughter alive, Ji-yeon needs to prove a convicted murderer not guilty on his second trial, only within a week. Ji-yeon tries to convince herself the murderer should be innocent, but the encounter with the victim’s mother makes her understand what drove crime-to-crime.