In the near future, nearly the entire world is held in the iron grip of a massive conglomerate, the Persona Century Corporation. One day, a mysterious, handsome man arrives in Shinjuku, one of the few areas not controlled by Persona Century. Shinjuku is a perilous and lawless zone, swarming with rebels and terrorists. The newcomer is known as Dark Side, and with the aid of a small group of rebels, he intends to shatter Persona's stranglehold on the world.