Kim Sam-jin is forever a substitute player for a Social Baseball Club, and feels inferior to his friend and rival, Park who is the competing team’s front batter. People treat both of them differently, and it seems almost natural that they do. Park will move over to Sam-jin’s team at the end of the month. Sam-jin now has only one day to face Park in a game. Sam-jin, wanting to beat Park, begins a special training session. He makes us wonder about the secret of his special training.