Housewife Kanako appears prim and proper on the surface, but secretly harbors a deep desire to be tied up. Unable to confess this longing to anyone, her daily life is filled with anxiety and inner turmoil. Reaching her breaking point, she finally submits a request to the Tuning Club, seeking extreme masochistic experiences. Her request includes bondage, abandonment, spanking, and other intense BDSM acts. This film realistically portrays the inner conflict and eventual liberation of a seemingly innocent housewife as she steps boldly into the world of female masochism.