Living with an intellectual disability, Louis is wrongfully accused of the murder of his sister Delia and sentenced to 5 years in prison. Upon release, he is visited by one of the last men to see her alive who implies there is more to her killing than meets the eye. Armed with this new information, Louis embarks on a personal mission to find who is responsible for Delia's mysterious death.

A psychology student attempts to cure her sister's crippling psychosis only to expose them both to its origin: an ancient creature intent on claiming their souls.