In Madden Woods, Sheriff Paul Shields is passing a difficult period of his life and is divorcing from his wife Susan after the accidental death of their son Tim. Susan has moved to the house of her mother with their son Adam that wants his parents together. When Paul and his partner Sheriff Donny Saunders, who has come from New York, are summoned by a horse breeder to investigate the disappearance of one horse, they believe that the man has forgotten the gate open. Soon they find strange footprints and they believe it is a prankster playing a prank on the population. But soon Paul realizes that something weird is unleashed in the town and the Indian bartender believes it is a Wendigo. Sheriff Shiels asks from support from the National Guard but a storm is coming and the troop will only arrive later. Will he be capable to protect the inhabitants with Donny from the evil that is coming?