Lee Tae-im

Lee Hwan es un ex jugador de béisbol profesional. Estuvo involucrado en la fijación de los juegos y perdió todo. Jefe de la pandilla Sang Ha dirige un negocio de préstamos de dinero y un lugar de juego. Él hace que Lee Hwan trabaje para él. Mientras tanto, Lee Hwan se enamora de la dueño del bar Yeon Soo.

Back in his high school days, Joon-Seok was bullied by Chang-Sik Because of this, Joon-Seok's high school days were like a nightmare. Now, Joon-Seok finds it difficult to live a normal life due to the bullying. Meanwhile, Chang-Sik, who has forgotten what he did to Jeon-Seok, lives a relatively happy life. He is about to marry Ji-Hee. Joon-Seok will pay him back for all the misery.

Sung-Bum (Uhm Tae-Woong) is a hot-tempered detective who relies on his intuition to crack cases. He rarely comes across a case that he cannot solve. The body of a police officer is then discovered in a burned out car near an abandoned building. Drugs are also found near the dead officer. To catch the killer the police department sets up a special investigation unit for the case. Sung-Bum takes part in the investigation. Ho-Ryong (Joo Won) is a young, confident man who works as a criminal profiler. He trained with the F.B.I. in the United States. Ho-Ryong is also assigned to the special investigation unit. Ho-Ryong relies on evidence rather than instinct. Detective Sung-Bum takes an immediate dislike for Ho-Ryong.