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
as He-Man
Frank Langella
as Skeletor
Meg Foster
as Evil-Lyn
Billy Barty
as Gwildor
Courteney Cox
as Julie Winston
Robert Duncan McNeill
as Kevin Corrigan
Jon Cypher
as Man At Arms
Chelsea Field
as Teela
James Tolkan
as Detective Lubic
Christina Pickles
as Sorceress
Tony Carroll
as Beast Man
Pons Maar
as Saurod
