A hot-blooded baseball comic about Oba Kyuuto and other club members who have become third-team players at a prestigious baseball school, drawing out their hidden abilities through scientific training and aiming for Koshien. The ace of Wakaki Junior High School, Kyuuto Oba, who won the Kanagawa tournament, enters Misakidai High School, a prestigious baseball school where famous players from all over the country gather. He was a baseball player who triumphantly joined the baseball club, but because he wasn't scouted by the school, he ended up in the third army...!?