Years into a happy marriage, Yuri's husband is badly injured in a company-car accident and requires long-term care, leaving the couple with enormous compensation payments and a mortgage. Forced to work as an escort, she endures the humiliation until she encounters Kasuga, the teacher who harassed her during her adult student days. He initially pretends not to recognize her, but near the end of the session his attitude changes and he begins blackmailing her into obedience.