Miss Mallard and Willard are in Paris to be part of the audience as a great performer brings back her grandmother's dances and sparkly costumes in a brilliant new show. But the performance is short-lived when the notorious jewel thief, The Red Carnation, swoops in and ducknaps the main performer. But what would a jewel thief want with an old costume? Miss Mallard discovers the answer after she stages the switcheroo of a lifetime to catch the villains.