The opening scene of the psychological thriller takes place in an unknown dark room. A girl wakes up with amnesia and sees pictures of crossed-out people on the wall, including her own. She discovers a matching body on the floor, realizing she has killed people who have hurt her. A ghost helps guide her as she works to uncover her identity and past betrayals through flashbacks. Her journey leads her to burn the helper's body, resolving the ritual and gaining understanding.