Caillou learns to deal with a change in plans, when Daddy has to use the car and Mommy and Caillou have to take the subway. Caillou learns that a change in plans can be fun, checking out the map, getting tickets and listening to the musicians! Caillou learns about 'recycling' -- literally! When Caillou gets an eyeful of Leo's new bicycle, he wishes his bike looked special too. So Dad helps Caillou decorate his own bike with streamers and Mom comes through with a new horn! 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. When their car breaks down, the family goes shopping for a new one. Caillou has never seen so many shiny cars and especially likes the one with 'no roof' that they go for a ride in. Caillou and family go on a trip on Helen's boat, an old friend of Mom's. Caillou is surprised to find there's a whole house packed into the boat. Caillou learns about wind and sails, and even gets to steer the boat too!