While babysitting the daughter of Ed and Lorraine Warren, a teenager and her friend unknowingly awaken an evil spirit trapped in a doll.
Lucky Prescott's life is changed forever when she moves from her home in the city to a small frontier town and befriends a wild mustang named Spirit.
A desperate single mother moves with her three children into the notorious, supposedly haunted, real-life Amityville house to try and use its dark powers to cure her comatose son. Things go horribly wrong.