Aoi is a dental hygienist working at the same clinic as the dentist she married. Their long dry spell has left her constantly frustrated, so during checkups she presses her breasts against young adult male patients and enjoys their reactions. After discovering her husband's affair, she takes revenge by reaching for the crotch of the patient she always teases. The touch excites her far more than expected, and her games keep escalating until she finally straddles him in the middle of an exam...