Yomi Takeda and Tamaki Yamazaki have been dedicated to baseball since they were kids, often playing catch together. During those sessions, Yomi realized she had a remarkable gift for pitching. The two made a promise to continue playing baseball as they grew older, but life pulled them apart. Over the years, Tamaki developed into a skilled catcher, while Yomi, despite her natural pitching ability, struggled to advance in the sport.
Determined to leave baseball behind, Yomi begins her first year at Shin Koshigaya High School, resolved to steer clear of anything related to the game. But she runs into the baseball-crazed twins, Yoshino and Ibuki Kawaguchi. To her surprise, she also reunites with Tamaki, and the familiar act of playing catch reignites Yomi’s love for pitching.
With their childhood dream revived, Yomi and Tamaki join forces with Yoshino and Ibuki to bring their school’s dormant baseball team back to life. As more players join, the newly formed girls’ baseball team at Shin Koshigaya High sets its sights high—aiming for victory in the national championships.