For this series, the dashing blond hero was regressed to his teenage years, and he employed a hoverboard. As in previous versions, he teamed up with Dale Arden (also a teen) and balding, bespectacled scientist Hans Zarkov. Flash's parents were American astronauts who got sucked into a dimensional hole just outside the earth’s atmosphere. The trans-dimensional portal was placed there by Ming the Merciless, emperor of the planet Mongo, who hoped to provide open access for his invading armies. In this series, Ming had reptilian characteristics, and seemed to have a wife who was long dead (it was implied in some episodes that she had gone to Earth).
Flash, Dale, and Zarkov followed Flash's parents in their own space vehicle, rescuing them and closing the dimensional hole. Unfortunately, Flash and crew were stuck on the Mongo side. The earthlings discovered other nearby planets with anti-Ming factions and put together a loose coalition, determined to overthrow Mongo’s evil emperor and return Princess Thundar, Flash, Dale, and Zarkov to their native planet.