The coach of the Tokyo High School baseball team, Tanba, is watching the quarter-finals of the spring qualifiers. He is impressed with the performance of his ace, Miyuki kun, who has just hit a grand slam. The coach is also impressed by Miyuki's ability to throw the ball so fast that the opposing catcher is unable to catch it. Miyuki is the ace of the team, but he is recovering from an injury that has rendered him unable to play. He decides to take the entrance exam to the school.