Lonely girl Mai feels that she might disappear if no one is by her side. As anxiety and solitude grow, she can no longer suppress her desire to be tied up. Fantasies of being locked away in some dark, confined space consume her, and the world of her shame and desire begins to unfold. Discovering the pleasure that comes from enduring, her body writhes lewdly, and in stark contrast to her cute face, lust slowly begins to bloom within her. Her appearance transforms from that of a pure girl into a deeply seductive figure.