Makoto's favorite childhood memories are of playing baseball with his best friend and former teammate Shusuke, the catcher of his baseball team. When Shusuke suddenly moved away, Makoto was left devastated, but he clung to the promise of the two of them someday reuniting for the championship game at Koshien Stadium. Now in high school, Makoto is the ace pitcher of the baseball team, and he and Hokuto, the team's catcher, are an all-star duo. But then Shusuke suddenly transfers back to Makoto's school, and it gets harder and harder for the boys to keep their heads in the game under the scorching heat of the baseball diamond…