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.
Genres:
Sam Dunn as Self
Chris Adler as Self
Tom Araya as Self
Gavin Baddeley as Self
Blasphemer as Self
Randy Blythe as Self
Alice Cooper as Self
Pamela Des Barres as Self
Bruce Dickinson as Self
Ronnie James Dio as Self
Malcolm Dome as Self
George Fisher as Self
Tony Iommi as Self
Joey Jordison as Self
Lemmy Kilmister as Self
Kerry King as Self
Geddy Lee as Self
Tom Morello as Self
Jørn Stubberud as Self
Vince Neil as Self
Doro Pesch as Self
Dee Snider as Self
Corey Taylor as Self
Alex Webster as Self
Rob Zombie as Self
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