Saki Okuda, a 32-year-old dentist married five years ago to her husband, who owns a dental clinic together. They run a private hospital where competition is fierce due to many similar establishments. As they both work long hours at their practice and home life becomes increasingly filled with talk about work rather than intimacy, they find themselves drifting apart sexually. To cope with her growing desires, Saki would often relieve herself during bathroom breaks using self-pleasure techniques.
One day, a strikingly handsome man visits their clinic seeking treatment. Despite her best efforts to control her lustful urges while attending to him, she can't help but notice his arousal. When she intentionally presses her breasts against him, he involuntarily becomes fully erect. She teases him by saying that since he responded so well to her touch, she'll give him special treatment just for him. In a secret room away from prying eyes or ears, they indulge in passionate intercourse. This bitchy working wife won't be satisfied until every last drop of pleasure has been extracted!