Maina, a university student living with her salaryman boyfriend, sprains her ankle while busy working on her homework. At her boyfriend's suggestion, Maina decides to call a massage service. During the treatment, Maina feels great as her sensitive parts are massaged, but just before she reaches orgasm, the timer goes off and it ends. Maina is brought to the brink and becomes addicted to the massage. After that, she is massaged again and again, teased until she reaches the brink, and finally nods when the massager asks, "Do you want to extend the session?"