The story opens with a young man playing internet games. Suddenly his face darkens and he begins to pound the keys nervously. His face changes to despair as he reads a message from another user. "Mr. 20-years old, do you have all the items?" The reply is: "I need one more." We next enter the lives of the residents of the Paradise Villa as a mystery unfolds.

After being replaced by a younger coworker, TV host Hyo-jeong enrolls in an intensive yoga course that has serious consequences for anyone who fails to follow its rules.

Desperation drives two nuns to perform an exorcism no nun should attempt. With a possessed child at the mercy of evil and the opposition of the Catholic Church, they take on the dangerous forbidden rituals themselves, putting their immortal souls in grave danger. They must confront the terrifying cost of their sacrilegious actions, but one goal remains: the boy must be saved at all costs.