A graduate student questions his sanity after he rents a room in an old boarding house which was the residence of a 17th Century witch, and he figures out that the evil forces still roam within the walls.
When a party bus on its way to Burning Man filled with a bunch of sexy young adults breaks down in the desert and in the middle of a group of Satanic worshippers, all hell literally breaks loose. A massacre leaves seven survivors trapped on the bus, fighting for their lives while wondering if someone or someones are not what they seem.