The 17-year-old girl Kanhara Suruga (played by Miyuki Sawashiro) has a unique life experience. In her childhood, she received a monkey's hand from her deceased mother, which can help people realize three wishes. It is said that as long as you pray to the monkey's hand, you can even change the seemingly irreversible fate, but the person who makes the wish will also pay a huge price. With the help of her predecessor Araragi Koyomi (played by Hiroshi Kamiya), the monkey's hand finally attached to Suruga's left hand, and she had to wrap a bandage every day to cover up everything extraordinary. This spring, Suruga became a third-year student. At this time, rumors about the "devil" inside and outside the school were rampant. Suruga, who noticed the difference, started an investigation, but encountered an unforgettable enemy in his life... This film is adapted from a light novel written by Japanese novelist Nisio Isin.