Quinn takes a semi-chronological approach to the subgenres, from Doom to Glam to Thrash including the rise of Metallica...

Quinn looks at what came after Black Sabbath in the early to mid 80's; the NWOBHM and others asking "Who is the true successor to the legacy of Heavy Metal that Sabbath gave birth to in 1970?" Judas Priest, Motorhead, Iron Maiden, or Venom?

Quinn takes a look at the fundamental pillars of Heavy Metal and its origins in the late 60's and early 70's asking "Who Started It All?" Deep Purple, Led Zeppelin, Blue Cheer, or Black Sabbath?