John Gordon (Ward Horton) and his wife Mia (Annabelle Wallis) are expecting a child. He buys a vintage doll called Annabelle for their unborn daughter. Shortly after, their home is invaded by members of a satanic cult, who attack the couple and spill blood on Annabelle.
Traumatized, they try to move on with their lives and after their baby is born, they move into a new home. Annabelle comes along but when frightening, inexplicable things start happening, they find that a demon has attached itself to the doll.