Muhammad Ali built his reputation in the ring against Sonny Liston and George Foreman, using speed and showmanship that changed what heavyweight boxing was supposed to look like. This film traces his full career, from the early title fights through the bouts that made him a global figure, but its center is the choice he made outside the ring: refusing induction into the U.S. Army during the Vietnam War and losing years of his athletic prime, and his license, as a result. That stand cost him money and momentum at the peak of his ability, and the film treats it as inseparable from his boxing record rather than a footnote to it. Archival fight footage carries the sports side of the story, while the Vietnam refusal supplies the political one, and the two threads run together to explain why Ali mattered to people who never watched a match. It ends as a career-spanning portrait of a fighter whose biggest fight happened outside a ring.