August 7, 1987
Genre(s): Action, Adventure, Science Fiction, Thriller, Fantasy
Skeletor and his army capture Castle Grayskull, along with the Sorceress of Grayskull. The Eternian defenders, including He-Man, Man-At-Arms and Teela, return to their home planet in an attempt to defeat Skeletor and prevent him from gaining the hidden power of the Great Eye of the Galaxy. They manage to free a Thenorian locksmith, but in their attempt to get to Skeletor, the locksmith loses the Cosmic Key, which can open the portal to any point in time or space. The Key falls into the hands of two teens on Earth, Julie and Kevin, who find themselves unwittingly drawn into the cosmic battle for supremacy. With Julie and the Eternian defenders in danger, Kevin must work with the locksmith to create another Cosmic Key in time to prevent Skeletor from carrying out the final steps of his deadly plan.