 At the onset of World War II, his descendant, Gengaku, is interrogated by an Imperial Japanese Army officer about the family's continued preaching of the prophecies, which predicted the rise of Nazism and the defeat of the Axis powers.In the present day of 1999, biologist Dr. Ryogen Nishiyama is called in to analyze recent scientific phenomena, such as the appearance of large mutant slugs, children wielding advanced abilities after drinking water near a zinc mine, and large ice packs just north of Hawaii.He is also a leading figure in the fight against environmental pollution, natural disasters, and the global arms race.