Four gifted boxers rise up to dominate the sport: Sugar Ray Leonard, Marvin Hagler, Tommy Hearns and Roberto Duran; Leonard is the all-American feted as "the new Ali"; Hagler takes the hard road; Tommy Hearns steps into the ring in Detroit.

Gentle giant Tommy Hearns represents Detroit's hopes and dreams; in the aftermath of the presidential election, Ray Leonard challenges Roberto Duran; Marvin Hagler is given a second chance at glory.

A serious eye injury forces Leonard's retirement; Duran hits rock bottom but stages a miraculous comeback; with Leonard and Duran out of the way, the stage is set for one of the greatest fights of all time: Hagler vs Hearns.

Ray Leonard comes out of retirement to fight Hagler; Hagler quits; Hearns devastates Leonard in their rematch; Leonard and Duran stage a final fight and the Kings' legacy is assured.