In a futuristic, alternate-world Tokyo, the city is made up of ghetto slums and nightclub playgrounds where gangs of wayward youth rule the streets. The city is carved up into hoods, and the crossing of territorial lines quickly leads to riots and rumbles. On the turf ruled by the savage yakuza Big Buppa, the simmering tension is about to boil over into all-out war. Who will emerge victorious?