Marielle the mouse is a dressmaker and she makes her home in an upside-down flowerpot in Paris. One day, the elegant Madame de Sooree asks Marielle to make nine dresses for her nine daughters—Berenice, Babette, Belle, Bernadette, Blanche, Blondelle, Brie, Brigitte, and Beatrice¬—for their birthday party.
Marielle tours the city, looking for creative inspiration. But with only ten days until the party, will she be able to deliver the dresses on time? Even after a big wind whooshes through her workroom? Her friend Pierre the pigeon can help, but only if Marielle can overcome her fear of heights to take a wild ride over Paris!