Vienna, City of Song.

Steffi is in love with the unemployed musician Pepi. Still, her father the musical instrument retailer, Ignaz Korn, wants her to marry one of his card playing buddies, the butcher Burgstaller. When the typesetter, Cäsar Grün, purposely misprints a winning lottery number in the newspaper, Korn and Burgstaller, thinking they have won, pay the drinks for everybody in the Bock Café and then give away their businesses.