On the planet Eternia, a young prince gains the ability to become a powerful warrior to defend Castle Grayskull against the dark lord Skeletor.

He-Man and the Masters of the Universe (2002) premiered on Cartoon Network on August 16, 2002. Eternia is a world of myth, sorcery and advanced technology where epic heroes accomplish remarkable deeds, strange creatures roam the world, and malevolent enemies wreak havoc. Deep within Castle Grayskull lies the repository of universal knowledge hidden long ago by the Elders of Eternia. He-Man and the Masters of the Universe defend Castle Grayskull and all of Eternia from the tyrannical Skeletor and his Evil Warriors.—Anonymous