Defenders of the Earth S01E26 - Terror in Time

Playing into Ming's hands, the Defenders steal a mutant life form from Ice Station Earth which they believe Ming will use to destroy all life on Earth. Ming then lures them into a vortex which sends them reeling back in time. The Defenders have to find a way back to the future, they have to help a hero from the past rescue his wife and bring stability to his kingdom. A most valiant effort, indeed! Guest-starring legendary comic strip adventure hero Prince Valiant!