An MMA fighter helps an exorcist fight evil.

After losing his father at a young age in a terrible accident, Yong-hu (Park) abandons his faith and chooses to only believe in himself. Now as an adult, Yong-hu is a champion MMA fighter and has everything he has ever wanted, that is until mysterious wounds appear in the palms of his hands. He solicits help from a local priest Father Ahn (Ahn), hoping the priest can help relieve him of the painful markings only to find himself in the middle of a dangerous fight against otherworldly evil forces seeking to wreak havoc on the human world.