A bickering couple driving cross-country pick up a murderous hitchhiker who threatens to kill them unless they take him to a sanctuary. In return he agrees to split some bank loot he has on him.
An archaeology student photographs a mysterious naked woman by a waterfall, unaware that she is a female demon called Haggia, who soon takes possession of him via a cursed amulet.
Jessica Barrett, wife and mother of two young children, begins to show signs of demonic possession while pregnant with her third child. As she seeks help from her husband and doctor, a mysterious man approaches her and seems to have some answers.
