You are Hark and Kren, Blood Brothers on Planet Sylonia which has been plundered and ravaged by the evil Scorpions. You want revenge, so payback is a must. You have to find your way around the Scorpions' mines, shooting critters and collecting gems. Your endeavor, nevertheless, will not be an easy one. Although your jet-bikes are state-of-the-art, you do not have enough energy or ammunition to last for long. Be prudent... The future of Sylonia rests in your hands.