In a psychiatric sanatorium, a young woman named Nica Pierce confronts her inner demons while coping with the tragic death of her family, which led to her being accused of murders that were actually committed by a possessed doll named Chucky. Convinced that her madness is part of a dark game, Nica begins her treatment, where the psychologist tries to convince her that her experience with the doll is just a product of her tormented mind. But things take a chilling turn when the seemingly innocent doll appears in the sanatorium.
The tense atmosphere quickly becomes corrupted as patients start to succumb to strange deaths. Nica, sensing that Chucky's hand is behind these horrors, tries to warn the others, but no one believes her. As she struggles to maintain her sanity, she realizes that Chucky's game has evolved. Not only has he returned, but he has also gained new followers: other possessed dolls that are ready to sow chaos. With the help of some of the patients, Nica must confront her fears and find a way to stop Chucky once and for all. The battle between good and evil intensifies in a bloody spectacle where madness and revenge intertwine, unleashing unimaginable horror in every corner.