The radiology department of Amakasu General Hospital, known as "Radiation House," receives a call for doctor An Amakasu that her father, Shoichi, is in critical condition, whilst treating islanders at a clinic on a remote island, but soon after An arrives, he passes away. Then a large typhoon and an unknown infectious disease strike the island. Upon learning of this, the Radiation House staff, including radiographer Iori Igarashi, are forced to make a decision.