From Gold's Gym in Venice Beach California to the showdown in Pretoria, amateur and professional bodybuilders prepare for the 1975 Mr. Olympia and Mr. Universe contests in this part-scripted, part-documentary film. Five-time champion Arnold Schwarzenegger defends his Mr. Olympia title against Serge Nubret and the shy young deaf Lou Ferrigno, whose father is his coach; the ruthless champ psyches out the young lion. Sardinian Franco Columbu competes in the lightweight class; at home in Italy he solves a tight parking problem by lifting the car into place. Joe Weider is the marketer; Mike Katz and Ken Waller go for the title of Mr. Universe. Bodybuilding and a celebrity-to-be go mainstream.

Jerry Ferro's 40th birthday has brought his life into sharp relief and it's not a pretty picture. A once-promising amateur boxer -- who quit so he wouldn't risk his perfect record of underachievement -- Jerry has been knocking around from one construction job to another and spinning his wheels in an unsatisfying relationship, all the while with an eye toward eventually getting his act together. His last connection to the fight game is the evening boxing class he teaches to middle-aged, middle class, middle management types at a gym in Pasadena, where he also works as a handyman. When venerable boxing coach Eddie Bell asks Jerry if he'd like to spar a couple of rounds with Malice Blake, an up-and-coming pro, Jerry reluctantly steps into the ring. Despite the ass-kicking Jerry otherwise receives, a one-punch knockdown of Blake convinces Jerry that it's time to make his return to competitive boxing...

Dennis is a clueless and slightly overweight guy, who left his pregnant fiancée five years earlier. Every day, Dennis tries to persuade the woman he loves to accept him back into his life, but everyday he fails. When he discovers that Libby has found a partner in the form of American Whit, frustration grows, and Dennis vows, that for once in his life, he will finish something. This something ends up being a Nike River-run in London. With his friends Gordon and Mr. Ghoshdashtidar by his side, Dennis begins training for the marathon he must finish.