On an autumn day, Caillou and his Mommy take a walk and pass by a construction site. Caillou loves to watch the big bulldozer and starts to pretend he is one too. Back home, not everyone likes Bulldozer-Caillou as he chases Gilbert with his dust pan/bulldozer shovel and destroys Rosie’s block tower. Caillou helps Rosie build a new tower and finally finds a perfect job for a bulldozer: bulldozing the leaves with Dad in the backyard.