During the war, on a small island in the South Pacific, a young doctor Fujisaki Kyoji accidentally cut his finger with a scalpel when he was handing wood to a soldier, but he still insisted on completing the operation. A few weeks later, he learned that the patient had syphilis, which he had also contracted.
After the war he went to Japan, where he continued to practice medicine with his father in their own clinic. He also returned to his girlfriend who had been waiting for him for six years during the war. But he did not tell his girlfriend the reason why he was cold to her and unwilling to marry.
Nurse Minegishi first saw Fujisaki Kyoji treating himself, and then overheard the truth he told his father.
Fujisaki Kyoji is nursed by a police suburb to one of their wounded officers, only to discover that the person who attacked the police was the one who first infected him with the disease, whom he learns is married and that his wife is pregnant with a child. Fujisaki Kyoji insisted that the man let his wife be an inspector, and the man reluctantly agreed.
The man's wife was carrying a deformed child, so the drunken husband yelled at the doctor, saying that the doctor had instigated his wife to betray him - because she was going to divorce him now. Nurse Minegishi immediately recognized the man who had forced her to have an abortion and nearly ruined her life. In the face of his dead child, the man ran out of the delivery room, brokenhearted.
Fujisaki Kyoji's girlfriend decides to marry someone else and find her love again. However, Kyoji Fujisaki's personality left a deep impression on the nurse, and she decided to do her job as a nurse seriously. The man's wife recovered, but the man was taken to the hospital. Toshirô Mifune decided to work with his father as an accomplished doctor
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