Saki is 32 years old and married to a dentist; together they run a dental clinic. However, with many private practices competing fiercely, their conversations at home and at the clinic have dwindled to just work talk, leading to a sexless marriage. As she matures with age, her libido grows stronger, and she finds herself increasingly aroused even during work hours. To cope, she secretly masturbates in the restroom to relieve her pent-up desires. Amid this suffocating routine, a man who perfectly matches her ideal type arrives as a new patient. With her relationship with her husband growing colder and her own urges becoming unbearable, Saki finds herself increasingly drawn to him during treatment sessions. Alone with him in the confined space of the examination room, her desires spiral out of control. When she intentionally presses her big breasts against him, he instantly gets a full erection. He whispers to her, "You've got me this hard... I'll give you a special treatment, just for you," exposing her true nature as an aggressive seductress. The film captures the irresistible allure of a married woman embracing her lustful side.