In the San Francisco Bay Area, a ragtag group of young rockers rejects MTV's popularized rock music scene and the theatricality of Hollywood's hair bands of the 1980s. Beginning by exchanging tapes in an underground music scene and infiltrating clubs and record stores with their sound, the headbangers worked to establish a more intense vein of metal music referred to as thrash metal. First-person accounts reveal the significance of the movement's influence on the California music scene and the message it gave to young people to fight for what they believe in. Directed by Adam Dubin.