Professional boxer Eiji Kamiyama had been attempting a comeback in the Philippines but hit 40 without a fight. Suddenly, his daughter Momoko arrives with news of her mother's death. Disturbed by their reunion, Momoko and Eiji start an awkward life together, seeking what it means to be a parent and child. Miraculously granted a fight, Eiji decides to battle for their own place in the world. This story portrays the growth and existence of a "parent" and "child," set against the backdrop of boxing.