A highly intelligent female doctor with an obsession for genital cleanliness engages in a lesbian relationship with a nurse who is intrigued by the smell of sweaty buttocks. However, the nurse grows dissatisfied with their dynamic. Then comes Akane, a high school girl visiting the clinic, who uses magic caps to achieve orgasm. Soon, forbidden acts involving diapers and enemas begin to secretly spread between the nurse and Akane. Ultimately, this escalating trend drags the reluctant female doctor into the world of lesbian scat play against her will.