Caillou wants to play hockey with Billy and the other big kids. He goes with Daddy to the store to get the equipment he needs, but he finds he just can’t keep up with the big kids. After Daddy gives Caillou his old hockey sweater - which is way too big for Caillou - he tells him that if he keeps practicing he’ll be really good by the time he grows into the sweater. Caillou goes to Leo’s house to practice his hockey skills and dream about the future.