Ichizu Tsuchida and his older sister were abandoned by their parents when Ichizu was five, leading them to an institution. To overcome the trauma of abandonment, Ichizu pursues a career as a professional boxer. However, his debut in the ring is disastrous; he freezes and loses the match. In his despair, he finds encouragement from Hideki Takayama, a senior boxer at his gym and the current Japanese featherweight champion.