Sumire accidentally witnesses the doctor urinating while treating her husband, who collapsed from overwork. Seeing a male genital up close for the first time in a while, she can't help but feel heated between her legs and secretly pleasures herself. However, she is caught in the act by the doctor who has finished the treatment. Sumire consults with the doctor about her marital problems, receiving practical guidance. The next day, when the doctor comes for another examination, Sumire is played with until she's wet and ends up begging for sex with penetration.
