Twenty years into the future, a city now called Tokyo has developed into one of the few world-class high-tech centers, Tokyo City. The main character, Ken Kanzaki, is a young investigator assigned to the criminal investigation section of the Metropolital Police. He is one of the finest sharp shooters in the Police.One day, Ken is ordered to provide security for a party held by for Zaizen Konzern, a world-class plutocracy.