A ten-year-old kid walks onto a Giants practice field and throws a ball his dead father taught him, and that one pitch changes his entire life. The show means it, this isn't a fantasy about talent, it's about a boy carrying his father's ghost in his glove and learning that inheritance isn't just ability, it's weight. Every game is him trying to prove he deserves to be there, not because he's special, but because his father believed he would be.

Ten-year-old Dome inherits his late father's baseball glove, along with something far more valuable: a magical pitch the legendary Yomiuri Giants player taught him before his death. His mother and older sister want him to stay away from baseball, but when Dome shows off the technique during a Giants training session, the team signs him on the spot. Backed by the club's veteran players, he makes the Giants unbeatable at home, where the league's top hitters cannot touch his pitch. Away games are another story, since Dome is only allowed to play at the Tokyo Dome, where his father made his name. Along the way he meets rivals and friends, among them Melody Norman, an American girl who poses as a boy because women are barred from the game. Then the mysterious Don Carlos, a former Spanish bullfighter playing for the Hiroshima Toyo Carp who seems to share a past with Dome's father, arrives to threaten the Giants' run at the pennant.