Detective Jae-Ho (Yoon Tae-Young) tries to track down a serial killer known as the "Cling Wrap Killer." Meanwhile, at home, Jae-Ho tries his best to comfort his daughter So-Hee (Lee Jae-In). She was a victim in a horrifying incident. As Detective Jae-Ho's investigates further, his duties as a police officer and a father come into conflict.