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Klaus Seeberg is conducting research to find a new perfume. His wife Dagny is growing impatient, which is why she secretly hooks up with Joachim Friis-Olsen. When Klaus discovers this, he goes to Paris to sell his invention. One evening in Paris, he meets a Danish woman named Betty. Back in Denmark, Klaus' aunt throws a party. In addition to Joachim, Betty unexpectedly shows up at the party. What will Klaus do now? Is he in love with Betty?