The Halloween festivities in Itaewon are interrupted by a murder in a local pub. One woman remembers being at the same pub, but is not sure why.

Jin-Myung is a psychiatrist and exorcist. With his assistant, Ji-Kwang, they attempt an exorcism on Geum-Joo. She suffers from a bizarre phenomenon. They then face a powerful existence within Geum-Joo….