2011 film by Hwang Dong-hyuk

2013 film by Kim Byeong-u

A stranger arrives in a little village and soon after a mysterious sickness starts spreading. A policeman is drawn into the incident and is forced to solve the mystery in order to save his daughter.

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.