The summer of '91. Rural Finland. The Rock and Roll Hell Open Air metal festival is in full swing with the American death metal band Feral Carnage set to headline. During their set, what is first mistaken as an elaborate pyrotechnic show turns out to be the second coming of Jesus Christ. Taking one look at the people in attendance of the show, Christ damns the festival and orders his army of heaven to smite them from his fathers creation. Fueled by beer, weed, and the imperious power of metal, Feral Carnage must summon the forces of hell to fight back.