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.
| Directing | Jessica Joy Wise | Director |
| Directing | Sam Dunn | Director |
| Directing | Scot McFadyen | Director |
| Production | Scot McFadyen | Producer |
| Editing | Mike Munn | Editor |
| Production | Sam Dunn | Producer |
| Writing | Scot McFadyen | Writer |
| Writing | Jessica Joy Wise | Writer |
| Writing | Sam Dunn | Writer |
| Camera | Brendan Steacy | Director of Photography |
| Crew | Rob Zombie | Additional Music |
