A splendid adventure of terror, struggle, and danger! The evil demon King Kull has created a machine to transplant the souls of demons into the body of machines. With his army of ROBODEMONS he has cast a dark shadow over the region of Earth. You are a great warrior armed with your magical Boomerang. With it, you must penetrate the 7 gates of Hades that lead you to a confrontation with this demon king. Along the way you will free the condemned soul captives of Kull, wipe out his demons in their own living quarters, and destroy his Robodemon machine!