Koshien Stadium is the dream of high school baseball players across the country. The Koshienhama Commercial High School Baseball Club, which is in its second year of existence and has only 9 members, is the closest baseball team to Koshien and is lucky to be able to participate in Koshien from the preliminary round. Michi Kasugano, a transfer student from Hawaii, joins the Hamasho baseball club. However, no one knew that Nomichi, who at first glance looks like a junior high school student, was an amazing pitcher...!