Daigo wants to be a hero, but his father, who was once the ace of the Japanese handball team, is now a bum who loses all of their money in gambling. His father visits a coach and asks him to take care of Daigo, because he got into debt and is running from the yakuza. The coach thinks Daigo's an outstanding talent and is thrilled at the prospect of coaching him, and sends his daughter to go pick him up. Daigo then ends up living with the coach and his daughter. What will happen now?