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 strange and horrifying things happen to the family. The devil turned into one of the family members. The oldest child Sun-Woo calls his uncle Joong-Soo (Bae Sung-Woo) for help. Joong-Soo is a Catholic priest who performs exorcisms.