Fierce gang boss Jang Dong-su is violently attacked after a fender bender on a rainy night. After fighting back, he barely escapes; however, his reputation as a feared leader is damaged beyond repair. The only way to restore his image is to find his attacker and exact revenge. Jang teams up with Detective Jung Tae-seok to find the assailant but soon discovers the attacker is a serial killer. Detective Jung is forced to use gang boss Jang's resources to track down the killer.