Han Cheol-woo

His only friend called him 'the man from nowhere'... Taesik, a former special agent becomes a loner after losing his wife in a miserable accident and lives a bitter life running a pawnshop. He only has a few customers and a friend named Somi, a little girl next door. As Taesik spends more and more time with Somi, he gets attached to her. Then Somi is kidnapped by a gang, and as Taesik tries to save Somi by becoming deeply associated with the gang his mysterious past is revealed.

Kyung-Chul is a dangerous psychopath who kills for pleasure. Soo-Hyun, 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.