About the title
When Yong-hu was a child, his father, a policeman and a deeply religious man, died in the line of duty. Ever since, the young man has lived holding a grudge against God, avoids getting close to people, and has chosen to prove himself in MMA instead. One day a stigmata appears on the palm of Yong-hu's striking right hand, and since then he has been tormented at night by evil otherworldly entities. Trying to make sense of what's happening, the young man meets an exorcist priest, with whom he will have to build a relationship in order to stand together against the demonic forces.