Ashita no Joe plot
Joe Yabuki is a roving criminal who has no family to fall back on. He roams the outskirts of Tokyo and finds himself in a fight when he wants to help some children. An alcoholic boxing trainer sees Joe fight in the street and offers him a chance to become a boxer. Joe doesn't accept the offer. When he gets into a fight at a police station, Joe is locked up. While in prison, Joe decides to accept the trainer's offer and is given the opportunity to train in prison until his release, so that he will be ready to compete in real competitions.