Chisato is a married woman who works as a psychiatrist at a certain clinic. She decides to use the hospital director's villa for a relaxing vacation... Forgetting about her troubled relationship with her husband, Chisato enjoys her vacation alone. When Chisato returns to the villa after dinner, she is greeted by an unbelievable sight: a young man and woman having sex in the living room. She hurriedly checks with the manager, only to be told that the young woman is the hospital director's niece...