A notorious cult kidnaps a young girl, and sacrifice themselves by the light of the locust moon. The next morning the girl awakes, caked in dried blood and surrounded by corpses...but safe - or so she thinks. Years later, the locust moon is about to rise again and the girl is captured once more by a surviving member of the cult. She is taken to a remote cabin where she learns that a demon has been growing inside of her all these years, and before the dawn it will rise. Written by unknown

After almost drowning in a lake, Madison finds herself bound to a life of fear. Unable to describe what happened to her during the moments she was underwater, she begins to develop hydrophobia: an abnormal fear of water. Crippled by her post trauma, Madison attempts to shut out the world but her fear intensifies and she is faced with the vision of a dark figure that haunts her day and night. After watching her struggle for one year with the phobia and visions, Madison's four friends attempt an unconventional intervention in which they accidentally open a floodgate to a dark place where none of them are safe. As Madison and her friends dive deeper into the dark history of this figure that haunts them, it reaches out and begins dragging them to a horrifying place that they can never come back from.