Sea captain Russel Marsh was possessed by an ancient entity for 93 years, committing horrific acts for a cult. Now free, he seeks to travel back in time to undo his dark deeds, while the cult vows to eliminate him.
A married couple rents a beach side Airbnb only to be surrounded by peculiar neighbors and occurrences. They soon discover to be in the grips of a mysterious cult and their ancient sea god.