While Caillou and his family are on a picnic at the park, his beach ball accidentally rolls into a pond. Caillou sees a family of ducks swimming in the pond and wants to take a closer look. Dad shows Caillou a neat trick to call the ducks. They hide behind some bushes and the ducks come out of the water. They find Caillou’s missing ball and head home where a special surprise is waiting for Caillou at bath time.