The film discusses the traits and originators of some of metal's many subgenres, including the New Wave of British Heavy Metal, power metal, Nu metal, glam metal, thrash metal, black metal, and death metal. Dunn uses a family-tree-type flowchart to document some of the most popular metal subgenres. The film also explores various aspects of heavy metal culture.
Sam Dunn
Self
Chris Adler
Self
Tom Araya
Self
Gavin Baddeley
Self
Blasphemer
Self
Randy Blythe
Self
Alice Cooper
Self
Pamela Des Barres
Self
Bruce Dickinson
Self
Ronnie James Dio
Self
Malcolm Dome
Self
George Fisher
Self
