Telling the story of Olivia, a psychiatrist specializing in mental health, who tries to help Rendy, a police officer, dealing with a brutal massacre case carried out by Cantika against her child and husband. After going through several therapy sessions, Olivia's own psychological condition deteriorates. A terrifying entity has long possessed Cantika’s body and was the reason she slaughtered her entire family, and now it is causing Olivia’s past to resurface.