This film is a study and review of this new dawn in rock music, and with the aid of those who were there at the time, presents both the story of this fascinating musical journey and reassess the sounds, the bands, the impact and the legacy of Thrash.

It features interviews with members of Metallica, Megadeth, Machine Head, Diamond Head, Elixir, Neurosis, Laaz Rockit, Sacrilege BC, and many others. Also performance footage of all the pivotal Thrash bands, review and re-assessment from journalists Malcolm Dome, Lonn Friend, and Joel McIver, archive material, location shoots, and much, much more.