To save a girl in danger, a priest and deacon jump into a mysterious case. A young girl who belongs to Father Kim’s parish becomes comatose after a hit-and-run accident. Father Kim finds out she is possessed by an evil spirit. Father Kim along with a rebellious young seminarian named Choi who is unsure about the spiritual warfare, tries to exorcise the demon and confine it in a piglet. Members of rosicrucianism informs Father Kim that two of their priests were killed by this demon. During the exorcism, manifestations of the demon terrifies, one of them being developing unnatural rashes all over the body, Choi and he runs out, but comes back to finish what they started with determination.