The film tells the story of the Little Emperor of the Animal Fashion Kingdom, who asks for a costume design competition with the theme of "The Emperor's New Clothes" when he takes office. When the animals in the Fashion Kingdom hear the news, they all join the competition, and all of them think that they can design clothes that will satisfy the Emperor. The students of the Fashion Academy of the Fashion Kingdom naturally could not miss this once-in-a-lifetime opportunity. By chance, a pair of brats, Pants and Sis, who failed their exams, blend into the royal palace. After causing a scene in the palace, they accidentally win the title of "Star Designer".