Hiro has two passions: baseball and pornography. However, an elbow injury forces him to abandon baseball, leading him to choose a school without a baseball team. His childhood friend Hikari attends a different school alongside baseball ace Hideo. Both of them wish Hiro had not quit baseball. Hiro joins the soccer team and meets Haruka, a very clumsy girl who is also the daughter of his father's boss. Haruka serves as the manager of the unofficial baseball club at Hiro's school. When the soccer team challenges the baseball club to a game, hoping to humiliate them, the baseball club nearly loses until Hiro, disgusted by the soccer team's arrogance, switches to the baseball club.