An explosion, a conspiracy, and an unlikely duo on a mission to expose the truth.

Caillou plays as a pilot; he scrapes his knees and likes the extra attention; the traffic lights near school stop working and a policeman comes to direct traffic; Caillou learns about lots of ways ...

It's a very special holiday for Caillou when he learns about Christmas traditions around the world and the importance of giving and sharing. When Caillou wonders just how many days there are left ...