Siblings Hun-yi and Nan-yi grow up as best friends. Hun-yi, a natural pitcher, joins a baseball club, where a professional baseball player teaches the children the game. The kids, though, have no interest in the hard training the sport demands. After a twist, Hun-yi's team reaches the finals of the Little Baseball Championship. Aimed at fans of sports stories, the film centers on young players, a gifted pitcher, and a sibling bond.