Perseus, a demigod and the son of Zeus, battles the minions of Hades and the Underworld in order to stop them from conquering Olympus and Earth.Perseus, a demigod and the son of Zeus, battles the minions of Hades and the Underworld in order to stop them from conquering Olympus and Earth.Perseus, a demigod and the son of Zeus, battles the minions of Hades and the Underworld in order to stop them from conquering Olympus and Earth.