Meet Caillou, the lovable 4 year old with a big imagination! Caillou experiences all the wonders of being a child with his sister Rosie, family and friends.
It's Caillou's first day at daycare and he really doesn't want to go. But after meeting his teacher and making two new friends, Caillou finds that daycare is a fun place after all.
Caillou loves anything to do with trucks, so is very happy when Dad asks him to help wash the family truck. While he sits in the truck, he imagines he's driving to the beach.
Caillou remembers when he was just two and a half and Rosie came home for the first time. Everybody was very excited—everybody except Caillou, who felt a bit left out.
Caillou thinks his sister Rosie is getting favourable treatment and it just isn’t fair! Caillou decides being a baby is better than being four and pretends to be a baby.
Caillou is having a game of dinosaur hunter with Gilbert the cat. He goes for a snack and when he comes back there’s no sign of Gilbert. He’s disappeared!
Caillou is playing in the park with Clementine. Caillou is frightened to go on the big kids’ slide, but he can’t bring himself to admit it to Clementine.
Grandpa tells Caillou about the time when his Daddy went on a camping trip. Caillou loves the idea of camping and he and Grandpa set up the tent in the garden.
Caillou and his family spend the day at the beach. They go into the water; a seagull tries to steal Caillou’s sandwich, and he and Dad build a sandcastle.
Caillou’s big friend André has come to visit. André’s a soccer player and Caillou wants to play too... Only Caillou isn’t very good at kicking the ball.
It’s Caillou’s birthday and he’s having a party. What he really wants for his birthday is a special dinosaur. And by the time the party is over he unexpectedly has two of them!
Mom and Dad are going out. Caillou wants his regular babysitter, not Julie. He gives her a hard time, refusing to eat his supper... But then Julie turns suppertime into a game.