In April 2018, a female student joins the baseball club of Tochigi Prefectural Kanuma High School. Her name is Kawase Haruka, who joined the club as a player instead of a manager, was the only female player in the prefecture for three years. In 2020, shocking news hits Haruka and others who are in the third grade. The first Koshien tournament after the war was canceled due to Corona. Sonoda and his friends, who have lost their goals, lose the energy to hold the bat. However, even in such a case, Haruka continues to practice independently. Sonoda and his friends, who first understood the situation of Haruka who couldn't even have the goal of playing in the match, let alone Koshien, want to make Haruka on the stage of the official match even if she exceed the rules.