When astronaut John Blackstar's ship was pulled into a black hole, he found himself stranded on an alien planet. He must find a way home, but in the meanwhile the local populace of Trobbits need help. The evil Overlord is oppressing them with his Power Sword. John finds the Star Sword and begins to resist the Overlord. If the Power Sword and Star Sword are joined, they become the Power Star, a weapon that is powerful beyond all measure.