Plot synopsis: An intimate exploration of the incomparable life of Muhammad Ali. The amazing victories and defeats that made Ali a legend, both in and out of the ring, have been well documented and while those landmark events will live in The Greatest, the heartbeat of the story is fueled by all the moments that took place outside of the spotlight. The world remembers an icon, but The Greatest is about a man, a husband, a father, a brother, and a son.