Manami is a single mother with a dream of becoming a boxer. But life hits hard when she loses her job defending a colleague in a pinch, and her unstable financial condition leads her to lose custody of her daughter Emi to her mother-in-law. She eventually lands a new job at a nursing home, but an accident puts her in a tight spot once again. To set her life straight and get her daughter back, Manami finally decides to conquer the boxing ring.