The cartoon features Hercules, the legendary hero, who dwells on Mount Olympus. When villains threaten the people of ancient Greece, he puts on a magic ring from which he gets his superpowers. When he puts it on, it is struck by flashes of lightning (referred to as the Thunder of Zeus in several episodes). Hercules is then endowed with super-strength, and goes forth brief episodes to do battle with nemeses such as Daedalus, an evil wizard who is the chief villain, as well as others such as Wilhemine the Sea Witch, and the Mask of Vulcan (whose real name, mentioned in only a few episodes, such as "Hercules and his Two Rivals", is Murtis). Hercules has friends and allies such as Helena, his girlfriend; Prince (later King) Dorian; the boy centaur Newton; and Tewt, a miniature boy satyr who "spoke" only by playing his panpipes.