The Sky-blue Evening Dress.

As the son of a fashion house owner in Zurich, Hans Haberland apparently can offer his lovers any article of clothing, for which they're willing to sell themselves. His current girl-toy Lizzie wants this fantastic, sky blue dress -- but it's that dress exactly, which his father has just sold to a business buddy in Berlin. Oh, the shortages and traumas of war one has to put up with!