Hercules, son of the Greek God, Zeus, is turned into a half-god, half-mortal by evil Hades, God of the Underworld. Hercules is raised on Earth and retains his god-like strength. When he discovers his immortal heritage, Zeus tells him that to return to Mount Olympus he must become a True Hero. With the help of his friend Pegasus, Hercules battles monsters, Hades and the Titans, but it is his self-sacrifice which makes him a True Hero.