Caillou meets Isabel, a little girl visiting his neighbor for a while. Caillou is enchanted with his new friend. Her laughter, her twirling and most of all her white rabbit - everything about her fascinates him! Leonor becomes his very own princess. Caillou finds out what it's like to fall in love. In this series, children will go “hand in hand” with Caillou to navigate their way successfully through various key developmental experiences of childhood. Written with input from child psychologists, these books help children understand the new situations and feelings they are experiencing.