Caillou's grandpa is over at Caillou's place. They're playing about when Caillou's grandpa reminices about the time he went camping with Caillou's dad a long time ago. Caillou wants to go camping, too. So they do. They set up a tent and go nature hiking around the garden. At night, they have marshmallows and look at the stars. Then it was time to sleep. But it was too noisy. Grandpa has a solution, though. The next thing we know, we see Caillou's mom calling them up for breakfast. And the tent's in the living room. Turns out that the night noises frightened Caillou. So they moved everything indoors.