It's the year 3000 and the surviving humans live in isolated cities. However, there are also these sort of magical nomads like Kaz Oshay (David Carradine), who walks around in shorts and a big cape. In the beginning of the film he's pursued by a group of guys on motorcycles. He manages to kill a few of them with their own disintegrater guns but is knocked unconscious. When he awakens he finds himself in one of the cities. He's to be part of Death Sport, which is a form of amusement for the public, like the ancient Coliseum. Also captured is another nomad, a woman named Deneer (Claudia Jennings). She and Kaz make plans for escape, though this means vanquishing all these guys on the "destructocycles". There's also mutants that live out in the rocky wastelands and they have to survive them as well. Oh, and Richard Lynch (VAMPYRE) is the movie's villain, Ankar Moor, who has a history with Kaz Oshay. There's a climactic sword fight between the two, thought I was surprised by the quick death scene.
This is all played serious, not tongue-in-cheek like Corman's previous DEATH RACE 2000, so if you're expecting laughs look elsewhere. However, you'll enjoy this if you are looking for a decent 70's post-apocalyptic movie like A BOY AND HIS DOG or THE ULTIMATE WARRIOR.