Gang Goo and Myung Joo are married and they have three children: Sun Woo, Hyun Joo and Woo Jong. They move into a new home, but bizarre and terrifying things happen to the family. The devil transforms into one of the family members. Oldest child Sun Woo calls her uncle Joong Soo for help. Joong Soo is a Catholic priest, who performs exorcisms.