When Caillou's family makes a springtime visit to Jonas' ranch, he takes them on a sleigh ride to a maple forest where Caillou discovers how the maple sap is collected from maple trees and gets to help collect some. The twins, Jason and Jeffrey, have come to play with Caillou in the snow. An investigation into some small tracks in the snow, leads them to a mischievous and playful squirrel that soon has them running around the yard. Exhausted, they drop in the snow and make some tracks of their own: snow angels. When Caillou, Rosie and Mom head to the big park, Caillou sees André and they decide to build a snow fort. Sarah shows up and the boys put the fort to the test as they start a fun snow fight. Caillou and his family are heading to the tobogganing hill! What fun it is to climb the hill and race down surrounded by people having a good time. Caillou is curious when they see a sled dog and his master giving a sled show. He even gets to ride the sled with Rosie! When Mom drives Sarah
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