Bodybuilders from around the world prepare for the 1975 Mr. Olympia and Mr. Universe contests, including five-time champion Arnold Schwarzenegger, who defends his title against Serge Nubret and Lou Ferrigno. Franco Columbu competes in the lightweight class, while Joe Weider markets the event and Mike Katz and Ken Waller vie for the Mr. Universe title.

Pumping Iron
In a battle of muscle and might, Arnold Schwarzenegger and Lou Ferrigno face off in a intense competition for the Mr. Olympia crown, cementing Schwarzenegger's legendary status.