The movie follows two detectives rivalry and their extreme competition of proving oneself better than other while solving a brutal school girl murder case. Two detectives Han-So and Mintae trying hard and soul to catch the killer. While solving the case, Han-so takes the help of his underworld connection. After that things started to turn ugly when his under world informant kills a person. The Informant started threating him and asks him to cover the case for her. Mintae on the other hand started thinking something really fishy is going on with Han-So. Rather than solving the school girl murder case, Mintae begins investigating Han-So. Han-so got himself in a trap with non ending blackmail. So,he also focuses on the blackmailer rather than murder case of school girl. Moreover,he kills his blackmailer. Mintae discloses evidences against Han-So.
In the end,they solve the murder case of school girl but they are marley a human being now .Hence,they become beast for wanting more and more power.
In the end,they solve the murder case of school girl but they are marley a human being now .Hence,they become beast for wanting more and more power.