Sam Dunn, a 30-year old anthropologist, sets out on a global journey to find out why heavy metal music has been stereotyped, dismissed and condemned and yet is loved so passionately by its millions of fans. Featuring performances and interviews from Lemmy, Slipknot, Dee Snider, Bruce Dickinson, Alice Cooper, Rob Zombie and a helluva lot more. A hard rocking documentary investigation into the history of Heavy Metal music. From the music's origins, to the controversies, via backstage excess and groupie love, this is the definitive guide.