A voyage through heavy metal music, with an unbeatable line-up including Jimmy Page, Ozzy Osbourne, Led Zeppelin, Black Sabbath, Motorhead, Guns 'n' Roses, Iron Maiden, Deep Purple, Metallica, Megadeath, Slayer, Jimi Hendrix, Kiss, David Lee Roth and Napalm Death. Plus a look at heavy metal's event of the year: Castle Donington.