This disc set is called "Trouble on the Bright Moon". It was the second release from the viewmaster line of 3-D Disc and uses "Filmation-Like" animation. The "Bright Moon" refered to in the title is one of Eternia's moons not Queen Angela's Kingdom from Filmation's "She-Ra" Cartoon.
Story: The Sorceress beams a telepathic message, "There is Trouble on the Bright Moon", to Prince Adam. The Heroic Warriors immediatly wing their way to Professor Orion's space station on the Bright Moon. "Help me, Prince Adam," cried Orion. "Mer-Man has kidnapped my daughter, Diana." "I'm sure Skeletor is at the bottom of any trouble in the universe," said Prince Adam as their shuttle neared Snake Mountain. And Adam was right, as He and his friends are greeted at Snake Mountain by Skeletor. But Skeletor's henchmen are no equal to Adam's secret identity as He-Man, The Most Powerful Man in the Universe! When Whiplash begins a landslide with his tail, He-Man raises one of the rocks with Whiplash and Evil-Lyn standing on it. Ram-Man then knocks them into another dimension. Then He-Man zaps Skeletor with a forcefield. "Now to find Mer-Man and Diana," said He-amn. And just in time he dicovers Mer-Man about to push Diana to a watery death. Wham! Mer-Man himself ends up in the drink. "Look, He-Man," screams Diana, "Beast-Man is Escaping." "That coward!" says He-Man, "I'll turn myself into a human whirlwind and swallow his spaceship!" The Evil Warriors taken care of, our friends head back to the Bright Moon with Diana. "Thank you for returning my daughter. What would the world be without The Masters of the Universe!" says Professor Orion.
Cast(Good): Prince Adam, He-Man, Teela, Man-At-Arms, Ram-Man, Orko, The Sorceress, Professor Orion, and Diana
Cast(Evil): Skeletor, Evil-Lyn, Beast-Man, Mer-Man, Whiplash, Snake Mountain(Vintage Playset), and The Ram-Ship(a vehicle used frequently by Skeletor in the Filmation Cartoon)