This is the story of Natsunosuke Honda, a professional baseball player—a relief pitcher who has been playing for a team called the Spiders for 8 years. The team operates as a highly stratified society, where a player's performance determines his annual salary. Natsunosuke is one of the highest-paid players in the game. He measures how good players are by how much money they make, and he intends to be on top and stay there, and as such is always looking for players to challenge and does everything to ensure that he is better than they are.