Caillou is a children's television show based on the books by Christine L'Heureux and illustrator Hélène Desputeaux. Many of the stories in the animated version began with a grandmother (who is also the show's narrator) introducing the story to her grandchildren, then reading the story out of the book.
Caillou first aired on Canada's Teletoon channel in 1998; it later made its US debut on PBS on September 4, 2000 and aired its series finale on October 3, 2010. The action of the Caillou story takes place in Canada, though that is never explicitly referenced in the dialogue. Caillou television show also began airing on Treehouse TV on September 7, 2009.
Each episode of Caillou television series is a slice of Caillou's life. Thanks to his vivid imagination, ordinary, everyday events quickly become exciting adventures where Caillou can play "make-believe". But Caillou can tell the difference between real life and pretending. When he is done playing make-believe, Caillou happily returns to the familiar daily routine of a 4-year-old. Indeed, each Caillou episode begins and ends firmly anchored in the real world.
Caillou is a wide-eyed four-year-old who learns about life - one adventure at a time! From his own backyard to his very first airplane ride, Caillou discovers the wonder and excitement of being a little boy in a very big world.