Prosecutor Jae-wook (HWANG Jung-min), specialized in violent crimes, detests criminals with a belief that they have discarded their own human rights. One day, while interrogating a suspect, Jae-wook loses his temper again and beats the suspect up a bit during questioning. The next morning, the suspect is found dead and Jae-wook is arrested for manslaughter.
Jae-wook claims his innocence but is sentenced for 15 years imprisonment. He meets Chi-won (GANG Dong-won) a handsome criminal and realizes that Chi-won actually holds the clue to prove his innocence. Can Chi-won help Jae-wook out?