In Paris, Madeleine de Beaupre (Marlene Dietrich) cons jeweler Aristide Duvalle (Ernest Cossart) and psychiatrist Maurice Pauquet (Alan Mowbray) by telling each man that she is married to the other. Duvalle delivers a string of pearls worth millions of francs to Pauquet's office, expecting to be paid, but Pauquet thinks he is a new patient who has delusions of needing to collect debts. Madeleine is there to introduce them to each other, and departs with the pearls before they figure out what she has done.