Gang-Goo (Sung Dong-Il) and Myung-Joo (Jang Young-Nam) are married and they have three children: Sun-Woo ([Kim Hye-Jun]]), Hyun-Joo (Cho Yi-Hyun) and Woo-Jong (Kim Kang-Hoon). 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 (Bae Sung-Woo) for help. Joong-Soo is a Catholic priest, who performs exorcisms.