Eijun Sawamura had his heart set on the middle-school national baseball championships. But his team is eliminated thanks to a wild pitch thrown by Eijun himself. He’s planning to go to high school with his teammates and try again next year when he’s scouted by the famous Seido High School Baseball team. When he goes for a campus visit, he finds himself on the receiving end of a baptism by fire! His experience forming a battery with up-and-coming catcher Miyuki rekindles his passion for baseball!!
The practice game on the final day of the training camp. Tanba’s demon pitch is chasing after them, now that he’s awoken as the true Ace!! But then he is unavoidably taken out of the game, leaving his team in complete disarray. In this emergency situation, the pressure is put on first-year Sawamura’s shoulders... Seido is in crisit without their Ace. But summer waits for no one! Can this team weather this trial together?! Finally, the Koshien qualifying games begin!!