Muhammad Ali built a career on being louder, faster, and more certain than anyone else in the ring, and this film traces that arc from Cassius Clay Jr., a working-class kid from Louisville, Kentucky, to the most recognized athlete of the twentieth century. Interviews with family members, former coaches, and celebrity admirers reconstruct his early fights, his conversion to Islam and name change, and the 1967 refusal to be drafted that cost him his boxing license and dragged him through years of legal battles. The film treats that stand as inseparable from his athletic legend, showing how Ali's public defiance made him a reference point for the civil rights movement and for the treatment of Black athletes generally. It follows him past his boxing prime too, into the Parkinson's diagnosis that slowed his speech and movement, and into the honors that followed anyway: Sports Illustrated naming him Sportsman of the Century, and his hands shaking as he lit the Olympic torch in Atlanta. The throughline is a man whose mouth and fists made him famous, and whose politics made him matter.