After winning the regional championship Seido High School leading by captain Miyuki makes appearance in Koshien stadium at the spring invitational with both second year pitcher Sawamura and Furuya .

The series focuses on the elite baseball team of Seidou High and its pitcher Eijun Sawamura. Seidou prepares to compete in various high school tournaments and the winning team will get an invitation to the Nationals and a chance to win the National title. The Nationals is the country's most prestigious tournament and the winner takes it all. Seidou High has not been to Koshien for the past seven years since Sawamura joined the team. What awaits Savamura and his comrades? Will they get the title?—Scientiiaa