The new year's Halloween is coming, and the annual mountain carnival in Green, near Beauty Lake in West Virginia, is about to be held, where young men and women from all over the country gather to enjoy themselves with music and delicacies. Legend has it that two hundred years ago, there was a massacre related to cannibals in a small town. But today, such a bloody and cruel story will only make bold young people more curious. Five young people, such as Billy (Simon Gindi Simon Ginty), Julian (Oliver Hall Oliver Hoare), Cruz (Amy Lennox Amy Lennox), Rita (Lux Ann Maggie Roxanne McKee) and Gus (Paul Rubko Paul Luebke) are part of this group of revelers. But on the way, they accidentally bump into Maynard (Doug Bradley), the perverted devil who has been hiding in the town for many years. As night fell, Maynard's minions got out of control and began a bloody Halloween that belonged to the demons.