In 1964, world champion boxer Muhammad Ali requested exemption from the military draft based on his religious beliefs. His request was denied and when he refused induction into the army, he was convicted and sentenced to 5 years imprisonment. His case eventually works itself up the Supreme Court. In their first conference after the case is presented, the justices decide by majority vote to uphold the conviction and Justice John Harlan is tasked with preparing the majority opinion. He assigns one of his clerks, Kevin Connolly, to prepare a first draft but try as he might he believes that decision his wrong. His draft argues for overturning the conviction and Harlan agrees with him. The justice must now find a way to convince his colleagues.

The life and career of Muhammad Ali (1942- ) as seen chronologically in archival footage: Ali as a fighter, a personality, a political lightening rod, and a man. Boxers who fought him describe what led up to major fights and the matches themselves; they also offer personal revelations about their own lives: George Chuvalo's family losses, George Foreman's conversion, Ken Norton's gratitude, Ron Lyle's teaching, Earnie Shaver's encounter with the Klan, and Joe Frazier's good humor pack their own punch. The fighters talk about Ali's quickness, cunning, and recuperative powers - and how fighting him changed their lives.