During a sweltering summer, married woman Izumi falls ill and visits a local clinic with her husband. The clinic is run by Dr. Yabu, a physician with a strange and unsettling presence. During the examination, the doctor dismisses her husband and begins freely touching Izumi's body under the guise of medical examination. Though the situation feels increasingly abnormal, Izumi gradually finds her composure wavering. Despite recognizing the pleasure she feels, she can no longer deny the growing sensations within her.