Hercules and Iolaus fall in with fellow traveler Typhon, a gentle and friendly giant. They are astounded to discover he is married to Echidna, the Mother of All Monsters.

Hercules has an uphill battle when he goes after King Sisyphus, who's tricked a young man into taking his place in the underworld.

Hercules and Iolaus search for a mystical relic that allows nothing but the truth to be uttered in its presence.