Clive, Eddie, Sammy, Tracey, Gomer and Adrian , a close-knit group of "headbanging" friends all have an equal passion for Heavy Metal music, partying and experimenting with the occult. When the mutilated body of murdered 12 year-old Mikey Gay (brother of the Hellrats' feared gang-leader Vinny) surfaces in Sammy's "Satanic Enshrined" bedroom, all six become prime suspects in the murder.
