Daisuke Aurora serves in the special division of peacekeepers in Jewde, one of the planet's largest cities. He and his android partner, Heat Guy J, team up to ensure that illegal goods stay off the streets and out of circulation. However, their presence is not well received by the local mob leader—a ruthless, unstable, well-armed son of the late Don, who is determined to prove he is not too young to take over the family business. In the city that never sleeps, will Daisuke and Heat Guy J end up sleeping with the fishes?