This soaring music documentary traces Gregg Allman's journey from a childhood scarred by his father's murder to the heights of Southern rock and late-life sobriety, exploring grief, addiction, love, and the racially charged American South through his transcendent music. Featuring electrifying performances and archival recordings, the film reveals how Gregg's unforgettable blend of rock, country, and blues mirrored the music and struggles of his soul.