Caillou, Dad and Rosie take Mom out for Sunday brunch to celebrate Mother's day. The meal is at a fancy restaurant and Dad explains to Caillou and Rosie that they have to be on their best behaviour. Caillou even wears a tie for the occasion. // Gilbert gets caught up a tree, and to Caillou's delight a fire truck full of firefighters has to be called in to rescue him. Dad happens to know one fo the firefighters and he and Caillou are invited to ride back to the fire station for a grand tour. // Caillou and Rosie get to spend the night at Grandma and Grandpa's house. They're thrilled to discover that Grandpa has set up brand new bunk beds in the guest room for him and Rosie. Caillou being the oldest, gets to sleep on top, but when he discovers how far down the ground is, he decides to crawl in with Rosie instead. // Dad drives Caillou to Grandma's for the day. When Dad accidentally leaves with Caillou's backpack full of toys, Caillou is upset and decides that there is nothing to do. Caillou sulks while helping grandma in the garden, until Grandma shows him how he doesn't need his toys to have fun. Soon Caillou is spending the day making wonderful prints with a potato!