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.
Scot McFadyen
Writer, Director
Sam Dunn
Director, Writer
Jessica Joy Wise
Director, Writer

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
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