When a cheetah exhibition opens at the National Zoo in Washington, D.C., Princess Diana arrives to witness the event. At the grand opening, the rare cats suddenly escape, fleeing through a crowd of frightened zoogoers! Diana quickly transforms into her secret identity, Wonder Woman, captures the cats and saves the day. But when the cheetahs continue their odd behavior, only one thing can explain it. The cat-like super-villain, Cheetah, is on the loose.