On the first day of high school Nohara Tama - who is just a plain, ordinary girl - gets herself involved in a heated argument between two baseball fans. As a result, Saitama White Cats fan Nishitake Reona and Fukuoka Falcons fan Daiei Haruko drag her to the baseball stadium. How will the fate of Tama - who doesn't know the first thing about baseball - play out!?