Seon Jin has nowhere to turn for relief. He gets viciously tormented at school because of his unsettlingly calm demeanor and frail looks. However, this is not the root of Jin's overwhelming terror: he fears his own father more than anything else. To most people, Jin's father is a successful businessman, a decent Samaritan, and a devoted father. But this is all a ruse; in reality, he is a crazy serial murderer, and Jin is his eager partner. They've been pulling this hoax for years, with the cops completely unaware. However, when his father expresses interest in the lovely transfer student Yoon Kyun, Jin is forced to make a choice: be the coward who sends her to the gallows like all the others, or be the hero who saves her.