In a quiet suburban town still haunted by a string of unexplained disappearances decades earlier, a renowned child psychologist, Dr. Evelyn Carter (Vera Farmiga), is called in to help a troubled young girl who refuses to part with her vintage doll. The doll, discovered in the ruins of an abandoned toy factory, appears harmless at first—until those who come close to it begin experiencing violent hallucinations and terrifying visions of their deepest fears.
Detective Marcus Hale (John Boyega), investigating a series of brutal and seemingly unrelated murders, begins to suspect a connection between the doll and the growing body count. As he teams up with Dr. Carter, the two uncover a chilling truth: the doll is not merely possessed, but serves as a vessel for a fragmented consciousness that can transfer itself between hosts, learning and evolving with each new victim.
Meanwhile, Sarah (Florence Pugh), a young journalist seeking redemption after a career scandal, follows the story and uncovers hidden records about a secret experiment that once attempted to merge human consciousness with artificial forms. The experiment was shut down—violently—after something went horribly wrong.
As the trio races against time, they realize the entity is no longer confined to a single form. It can influence others, manipulate memories, and turn loved ones into threats. With reality blurring and trust unraveling, the final confrontation takes place in the very factory where it all began—now a decaying labyrinth filled with echoes of past horrors.
To survive, they must destroy not just the vessel, but the consciousness itself—before it spreads beyond control and claims a new world to inhabit.