Caillou Stays Up Late is an episode from Season 2 of "Caillou". It originally aired on
Doris and Boris are getting everything ready for the dinner party tonight. Caillou wants to go there, but he can't, because it's not for children, and it'll be happening way past his bedtime. Caillou and his daddy go shopping, and Caillou buys flowers for the party. Caillou wants to invite his friends over to the dinner party, but Boris informs him that it's not tonight, and he also informs him that he won't be able to have any fun at this party tonight either because their schedules don't match up. Caillou didn't understand how Mommy and Daddy's party wouldn't be any fun, and parties are always fun. Back at Caillou's house, Doris sets the table when Caillou and his daddy came back. Doris tells Caillou that he remembered the flowers and Caillou tells her that he remember them and he puts flowers into the base. Then Caillou thought that the guests have arrived at the party, but it was Caillou's babysitter, Julie. When Julie is helping Caillou get ready for bed, Caillou doesn't want to go to bed because he doesn't want to get into his pajamas. Doris tells him that if he puts his pajamas on, he go to the party to say "Goodnight!" to everyone. At the party, Caillou says "Goodnight!" to everyone and Boris tells him that it's time for bed. Caillou is having a good night's sleep, and he is walked by the party. Boris thought Caillou was supposed to be in bed, but Caillou is nervous that he can't sleep because it's too noisy. Boris teaches him that big boys can sleep even when it's a little noisy, and he tells him that why won't we give it another try, so he picks him up, helps him get back to his bedroom, and tucking him to bed. Caillou suddenly remembered he left his stuffed toy dinosaur doll downstairs!
- Flower Vendor Lady
- Miss Martin
- Sarah's Mom
- Sarah's Dad
- Clementine's Mom
- Leo's Dad
- This is the only appearance of Leo's dad, Derek.
- When Caillou goes out with his father, he wears a blue suit including a blue jacket and blue pants.
- When Boris picks Caillou up, Caillou's toy dinosaur doll falls down.