During the Showa 10 era, an unusual bond forms between Akihiko, an aspiring doctor, and Hisao, a girl with a prosthetic hand, at a medical showcase. Yet, with each encounter, Hisao's body undergoes a haunting transformation, losing its originality to mechanical replacements. This vintage sci-fi tale delves into themes of darkness and elegance, challenging the essence of human existence and self-reliance.