Scouted for his potential, brash left-handed pitcher Eijun Sawamura joins baseball powerhouse Seido High to become the undisputed ace of the team.

Coach Kataoka takes the failure to reach the nationals upon himself as some shortcoming in himself. With the fall tournament presenting a new chance to reach the nationals, the team strives to overcome gaps left by the third years' absence. As they strive to improve, they retain the hope of making it to the nationals and keeping their treasured coach from retiring. The battle to hold the position of ace between Sawamura, Furuya and Norifumi continues bringing new strength to the team.

Act II

Picking up the next year after the end of the fall tournament, Seidou High School baseball team battle it out with new and old faces as they begin their tournament run at Koshien.

Act II -Second Season-

Scouted for his potential, brash left-handed pitcher Eijun Sawamura joins baseball powerhouse Seido High to become the undisputed ace of the team.