Here is the synopsis: Decades before his MTV reality show The Osbournes, Ozzy Osbourne was the dark, subversive lead singer in Black Sabbath, the band often credited with creating heavy metal.

Selling more than 75 million albums worldwide, an induction into the prestigious Rock and Roll Hall of Fame, and hitting #1 on the Billboard 200 chart in 2013, Black Sabbath has had lasting effect on music, influencing many bands along the way.

But their journey wasn't always easy. BLACK SABBATH takes us through the height of their fame, when the band discovered they'd been so badly ripped off by their managers that they didn't even own their own songs and they looked for salvation from Don Arden-a notorious gangster figure and father of Ozzy's wife Sharon- who resurrected their career but left them indebted to him, financially and personally. And into the 15 year war after the group broke up between the post-Ozzy Sabbath and Ozzy himself, whose solo career overshadowed Sabbath so much that a reunion was entirely on his terms.