The untold story of how “The Man in Black” saw the light. JOHNNY CASH focuses on a critical period in the country music legend’s life and career when he went from singing hymns in the cotton fields to playing sold-out stadiums. At the mountaintop professionally, a cycle of depression and drug addiction left Cash in the lowest valley personally. Featuring never-before-heard conversations with the Man in Black himself, the documentary follows Cash’s road to redemption and return to his faith, as country music stars Marty Stuart, Wynonna Judd, Tim McGraw and many others share their insights into the life and legacy of the artist, man and friend.