During a boyhood excursion to one of the southern archipelagos near Okinawa, Yuki barely survived exposure to a poison gas stored at a foreign military facility. The leakage annihilated all of the island's inhabitants but was promptly covered up by the authorities, leaving Yuki as an unacknowledged witness - one whose sense of right and wrong, however, the potent nerve agent managed to obliterate. Now, fifteen years later, Yuki is a social climber of Balzacian proportions, infiltrating the worlds of finance and politics by day while brutally murdering children and women by night. His drive, however, will not be satiated with a promotion here and a rape there. Michio Yuki has a far more ominous objective: obtaining MW, the ultimate weapon that spared his life but robbed him of all conscience. There are only two men with any hope of stopping him: one, a brilliant public prosecutor; the other, a tormented Catholic priest.