Muffy's father is the new soccer coach, but the kids, especially Muffy, doubt his coaching methods. Muffy cannot keep up with her father's training drills and fears her team will not win any games with her being goalie. Binky cannot perform well with his malfunctioning clarinet and his family cannot afford to buy a new one, so he starts a scheme with the rest of the Tough Customers to get rid of music by making so-called modifications to his classmates' instruments and using a megaphone and his clarinet to disrupt tryouts for the Young Person's Orchestra.