An expedition to an irradiated island brings civilization in contact with a primitive native culture. When one sensationalist entrepreneur tries to exploit the islanders, their ancient deity arises in retaliation. In waters off Infant Island, a presumed uninhabited site for Rolisican atomic tests, the "Daini-Gen'you-Maru" is caught and run aground in the turbulence of a typhoon. A rescue party following the storm finds four sailors alive and strangely unafflicted with radiation sickness, which they attribute to the juice provided them by island natives. The story is broken by tenacious reporter Zenichiro Fukuda and photographer Michi Hanamura, who infiltrate the hospital examining the survivors.