Johnny Cash stands among the giants of 20th century American life. But his story remains tangled in mystery and myth. This documentary, created with the full cooperation of the Cash estate and rich in recently discovered archival materials, brings Cash the man out from behind the legend. Taking the remarkable Folsom Prison recording as a central motif and featuring interviews with family and celebrated collaborators, the film explores the artistic victories, the personal tragedies, the struggles with addiction, and the spiritual pursuits that colored Johnny Cash's life.