Ten-year-old Dome Shinjo, son of a deceased baseball legend from the Yomiuri Giants, inherits his father's passion and exceptional talent for the sport. Despite his mother and sister's reluctance, Dome showcases a magical pitch he learned from his father, leading to a swift recruitment by the Giants. With the team's support, Dome's unprecedented success at home games secures the Giants' dominance. However, challenges arise when a rival finally overcomes his magical pitch, prompting Dome to unveil a new extraordinary technique. As new allies and adversaries, like the talented but disguised female player Melody Norman, emerge, Dome faces the enigmatic Don Carlos, a Spanish bullfighter turned baseball player with a mysterious connection to his father. Amidst these encounters, Dome strives to lead the Giants to victory in the league.