During WWII, Germans obtain the immortal heart of Frankenstein's monster and transport it to Japan to prevent it being seized by the Allies. Kept in a Hiroshima laboratory, it is seeming lost when the United States destroys the city with the atomic bomb. Years later a wild boy is discovered wandering the streets of the city alone, born of the immortal heart.
Travma geçirmiş eski bir savaş pilotu, savaş sonrası Japonyası'nda kıyılara saldıran nükleer destekli dev canavarı püskürtmek için sivil vatandaşların verdiği mücadeleye katılır.
After the previous Godzilla attack, a miniature arms race ensues to collect his cells. Concerned over Godzilla's possible return, the Japanese government uses the cells to create a new bio-weapon, ANEB (Anti-Nuclear Energy Bacteria). They seeks the aid of geneticist Genshiro Shiragami, who's experiments result in a new mutation.
Mining engineer Shigeru investigates the disappearance and death of his fellow coworkers when prehistoric nymphs are discovered emerging from the mines. After an attack on the local village, Shigeru heads deeper into the mines only to make a more horrifying discovery in the form a prehistoric flying creature. Soon a second monster appears as the two converge in Fukuoka.
Evlerinde gizemli bir şekilde mahsur kalan bir ailenin fertleri, azalan kaynaklara ve onları tutsak eden uğursuz güce karşı hayatta kalmak için beraber çaba harcamak zorundadır.