When the evil Skeletor finds a mysterious power called the Cosmic Key, he becomes nearly invincible, seizing Castle Grayskull and the surrounding city. The Sorceress is now Skeletor's prisoner and he begins to drain her life-force as he waits for the moon of Eternia to align with the Great Eye of the Universe which will bestow god-like power upon him. However, courageous warrior He-Man locates the locksmith inventor Gwildor, who created the Key and has another version of it. During a battle, one of the Keys is transported to Earth, where it is found by teenagers Julie and Kevin. Now, both He-Man and Skeletor's forces arrive on Earth searching for the potent weapon.
Dolph Lundgren
Frank Langella
Meg Foster
Billy Barty
Courteney Cox
Robert Duncan McNeill
Jon Cypher
Chelsea Field
James Tolkan
Christina Pickles
Tony Carroll
Pons Maar
Anthony De Longis
Robert Towers
Barry Livingston
Jessica Nelson
Gwynne Gilford
Walter Scott
Walter Robles
Cindi Eyman
Peter Brooks
Richard Szponder
Mike Carlucci
Nicholas Grabowsky