Wintertime brings lots of new experiences. Sarah teaches Caillou to build a snowman, Dad helps him stay upright on his ice skates (and picks him up when he falls down), and Mom shows Caillou the fine points of downhill skiing, including how not to be afraid of the ski lift. Meanwhile, Rexy has never seen snow and thinks the backyard is disappearing. The shimmering winter blanket inspires Gilbert to write a poem. And, Teddy, in true bear style, just craves a long winter’s nap! But soon, a glorious sight makes everyone sit up and take notice. When Caillou and Dad get to the vendor too late to buy a good Christmas tree, they decorate one in the yard instead. All the beautiful colored lights chase away the winter gloom.