Things get a little scary today. Caillou and his new neighbours, Jason and Jeffery, are playing hide and go seek in the backyard, until dusk brings out the shadows. A flashlight and Mommy help chase the shadows away. That evening, Caillou can't fall asleep when he hears scary "scratchy monster" noises and thinks there's a monster in his room. Daddy shows him that a tree branch brushing against the window is making the noises and the only monster in Caillou's room is Gilbert. Later, a bad dream about a scary monster leads to a restless night for Caillou. Mommy and Daddy help him learn to fall asleep safely in his own bed. And, finally, when Caillou sleeps over at Leo's house for the first time, he has fun until it's time to go to sleep. A phone call to Mommy reminds Caillou that Teddy was looking forward to spending the night. Together they rest easily.