Cha Hyeon-seong was a boy who had a life full of pain and suffering. One day, he was murdered by beasts of unknown origin, yet he was resurrected and awakened from his death. In front of him was Son Ga-young, a hunter going after him and the beasts. After this began Hyeon-seong’s struggle for survival in the middle of a constant battle between the two groups - the humans and the beasts.