Woo Tae-Seok is a lonely veteran detective. He focuses solely on solving cases. He teeters on a line between good and evil. Woo Tae-Seok crosses paths with a female psychopath, but he is unable to arrest her due to a lack of evidence. The woman eventually helps Woo Tae-Seok solve other cases.
Elenco: Shin Ha-kyun , Lee Seol , Park Ho-san , Kim Gun-Woo , Baro , Bae Da-Bin , Bae Yoo-ram , Yang Jae-Young , Yoon Hee-seok , Ryu Tae-ho , Hong Eun Hee , Cho Yi-Hyun .