In Burma during the closing days of WWII, a Japanese soldier separated from his unit disguises himself as a Buddhist monk to escape imprisonment as a POW.
A young idealistic doctor works at his father's clinic in a small and seedy district. During the war, he contracts syphilis from the blood of a patient when he cuts himself during an operation. Treating himself in secret and tormented by his conscience, he rejects his heartbroken fiancée without explanation.
An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.
