The plain and unremarkable ordinary girl, Nozahara Tama, gets caught up in a heated fight between passionate baseball fans on her very first day of high school. Forced to be taken to the stadium by Seibu Leona, a fan of the Saitama White Cats, and Daiei Haruko, a fan of the Fukuoka Falcons, what will become of Tama, who has zero knowledge about baseball?!