 Entertaining misadventures of a four year old boy named Caillou, where each day he discovers something new and interesting with his mommy, daddy, and Rosie. Between Caillou segments are segments featuring Caillou s pet cat Gilbert, Caillou s teddy bear, Teddy, and Caillou s toy dinosaur, Rexy, in puppet form. The show deals with issues like fear of the dark, patience, being a good friend, being a good sibling, and other important facts of life.