At her high school reunion, Rikako Yamamoto reunites with her old friend Sawako after many years. Shocked by Sawako's luxurious lifestyle and designer attire, Rikako finds herself drawn into that world. Tempted by Sawako's invitation, she joins and gradually becomes immersed in this new life—only to realize she's become nothing more than a plaything for others. Her chastity, preserved since marriage, is stripped away as she is demanded by clients day after day. Noticing her body slowly changing, she feels humiliated yet helpless, wondering what fate awaits her.