A man falls in love with a beautiful mannequin. He names the mannequin "Taiichika," which he discovered in his company's warehouse, and cherishes her as if she were his real lover. One day, Taiichika faces the threat of being discarded. Learning this, the man boldly sneaks her home and rescues her, pouring his twisted affection into her. From that day on, the strange cohabitation between the man and the mannequin Taiichika begins. Just like a real couple, he becomes deeply absorbed in the time spent with her, his feelings gradually growing stronger. His days with Taiichika create a relationship unlike ordinary romance—an abnormal bond. The emotions hidden deep within the man's heart begin to spiral out of control, and his life is profoundly transformed by living with Taiichika.