Overview

Kyung-chul is a dangerous psychopath who kills for pleasure. Soo-hyeon, a top-secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take vengeance against the killer, even if it means that he must become a monster himself.

Cast

Lee Byung-hun

Kim Soo-hyeon

Choi Min-sik

Kyung-chul

Jeon Kuk-hwan

Squad Chief Jang

Cheon Ho-jin

Section Chief Oh

Oh San-ha

Joo-yeon

Kim Yoon-seo

Se-yeon

Nam Bo-ra

Section Chief's Daughter

Lee Jun-hyeok

NIS Agent

Yoon Chae-yeong

Nurse Han Song-i

Choi Mu-sung

Tae-joo

Kim In-seo

Se-jung

Kim Kap-soo

Planning Team Deputy Head