The future. People in Tokyo live next to biorobots, simulated animals and silicone trees. Nature is dying, and the government in the country - the democratic technocracy - is being torn apart by corpocrats and totalitarians. Order is maintained by the Yakuza clans. One of their members becomes a victim of a political game and ends up in a correctional prison. After his consciousness goes through a series of reformative programs and he returns to society, the clan disowns its yakuza. Now he is on his own.