 Prince Adam is the son of King Randor and Queen Marlena, the royal rulers of the planet Eternia. What the King and Queen and his friend do not know is Adam is the most powerful man in the universe known as "He-Man", a mighty warrior, who with the use of his weapon, the sword of Greyskull, and with help from his companions, loyal soldier Man-At-Arms, his daughter Teela, the lovable Orco and He-Man s pet tiger Battlecat, He-Man fights the evil Skeletor and his henchman who bid to rule Eternia and discover the secrets of Greyskull, the mysterious castle where He-Man discovered the sword of Greyskull and received his special powers.