Mingyu and Wonwoo work as detectives in the Homicide Department. With their special skills, they are assigned to a case they already know. A gruesome serial killer who has never been caught resurfaces, and they have little time to solve the case. Jisoo and Jeonghan form a task force to solve the case and find te killer this time once and for all.

  After a car accident during their promotion, Mingyu and Wonwoo have to recover in a rehab center.  Two strangers show up and Wonwoo learns about his dark side. But this side is dangerous, and the two stumble right into a war between two clans...      

Hitman Wonwoo gets a job to eliminate a target. But this job suddenly turns into a rescue mission, and he has only a short time to get the target to safety. And for the first time in his life, that target has a name. And that name is Kim Mingyu.  

  Kim Taehyung is an . He is the king of his high school, arrogant and cocky. One day his parents decide to take in the stepson of his uncle. And his life starts to get out of control.

  Taehyung is living on the streets for years. Jungkook tries to convince him to live with his family because they have a connection that Taehyung does not know about. Jungkook does everything to gain his trust. Will Jungkook succeed? 

Jungkook is an introverted and shy boy in his first year at university. To his dismay, he soon realizes that he has to move into the most chaotic dormitory with a guy named Taehyung and three other students who all have a spicy secret.