Dolph Lundgren stars in this live-action film version of the popular television cartoon series (based on a collection of Mattel action figures). Lundgren is He-Man, a well-muscled super-hero, battling the evil Skeletor (Frank Langella) for control of the universe. Skeletor has designs on conquering the planet Eternia, a ravaged utopia ruled over by the Sorceress of Greyskull Castle (Christina Pickles). He-Man is summoned to stop Skeletor's plans. But when the wily dwarf Gwildor (Billy Barty) utilizes his Cosmic Key, He-Man and Skeletor finds themselves transported to California. There, a waitress named Julie (Courteney Cox) and her boyfriend Kevin (Robert Duncan Mitchell) come across the Cosmic Key and become embroiled in the intergalactic battle between He-Man and Skeletor.