Olivia, a psychiatrist who specializes in mental illness, tries to help Rendy, a police officer who is handling a sadistic murder case. The murderer, Cantika, killed her children and husband. After going through various therapy sessions, Olivia`s psychological condition worsens. It is revealed that a terrifying figure had long possessed Cantika`s body, driving her to kill her entire family. Now, Olivia`s own dark past has resurfaced.