Animated musical feature based on the American fashion doll franchise. The film follows Cleo de Nile (voice of Salli Saffioti) and friends as they attend a gala in Boo York to celebrate the passing of a magical comet. However, when it turns out that Cleo's sister Nefera (Wendee Lee) has a few tricks up her sleeve for using the comet's powers for her own gain, the others end up in a race against time to put a stop to her plans.