A group of stoners wearing Electric Wizard and Uncle Acid and the Deadbeats T-shirts drive to their vacation home with a van full of Black Sabbath CDs, weed, bongs, acid, and other goodies. Once at the house, the party starts, and an evil lysergic witch is summoned after Ricky “The Acid King” sacrifices his friend to Satan. Drug-fuelled madness, murder, and mayhem follow in a downward spiral of violence.