The spring cleaning is done! As soon as the brooms and dusters are put away, Timid Mole decides to go out and enjoy this beautiful day on the banks of the river. And so begins a day of strange encounters: Mischievous Rat, who knows all of the surrounding little world like the back of his hand, and Vain Toad, a specialist in disastrous hobbies. For Mole this season will be emotional. Adapted by Michel Plessix.