Plot Synopsis

In the 1980's,after finding success at home, the British heavy metal group Def Lepppard, began to top the U.S. charts with the help of renowned producer Mutt Lange. Although drug and alcohol addiction increasingly took its toll on the band, the party continued until drummer Rick Allen lost his left arm in a car accident. Pressured to find a new drummer or face the end of the group, the band instead encouraged their mate to learn to play with one arm--and emerged to their biggest audiences ever.