The Revenge of Skeletor

The Revenge of Skeletor is a 1983 storybook, accompanied by a cassette tape or 7 inch record. #KSR 614

Plot
The book describes Skeletor living on Infinita, sister planet of Eternia. He attempts to capture Castle Grayskull by holding Teela and demading He-Man to give him the Power Sword. At the end, Battle Cat knocks Skeletor through the space portal back to Infinita.

Video
Masters of the Universe - The Revenge of Skeletor