A serial killer is caught for his seventh murder. A cop tries to solve the first six cases with the killer’s help, but starts to suspect that he has ulterior…

A serial killer is caught for his seventh murder. A cop tries to solve the first six cases with the killer’s help, but starts to suspect that he has ulterior…

Hyeong-min, a prominent police detective, and Tae-oh, a killer who has confessed to multiple murders, maintain a fierce psychological confrontation.