The film details Johnny Cash's life from his growing up as the son of a cotton picker in Dyess, Arkansas, dealing with the death of his brother, his drug addiction, subsequent rescue by future wife June Carter, and his famous concert at Folsom State Prison.

The film opens in medias res with an exterior shot of Folsom Prison. The grounds are quiet except for the faint sound of music. Two guards on their tower peer at the main building. As we slowly approach the main building, the music begins to increase in volume. The camera tracks past empty cells and halls as the music becomes louder and more distinct; now cheering can be heard. Finally we see the source of the cheering: an audience of inmates for Johnny Cash's band, which is playing a vamp. In the next shot, a table saw rests on a table as a hand casually strokes the blade. After repeated calls, we are made aware that the hand is that of Johnny Cash. (Later we learn that the voice calling him onstage is that of the prison warden. ...more

Dunno