2005. The crime boss of the provincial city of Cheonan, Jang Dong-su, is attacked by a serial killer and turns out to be the only surviving victim. His reputation is tarnished; the only way to restore his authority in the eyes of his gang is to find the attacker and take revenge. Local detective Jeon Tae-seok hates organized crime with all his police soul, but he has to join forces with the gangster Dong-su to catch an even more hated maniac.