Clementine arrives at Caillou's house wearing a blue ribbon. Caillou wonders how he could ever win such a prize. This gives Grandma an idea. She decides to organize backyard Olympic games with competitions like the heel-to-toe walk, the biggest smile or the silliest walk. In the end, everyone gets a ribbon -- even Gilbert,for having the best purr. Caillou will learn that winning is not as important as having fun with his friends.