The student Leopold wants to marry blonde Kathrein the landlady of the Golden Goose in Wurzburg To discourage Leopold Kathreins aunt Minna writes to Leopolds father Valentin whose been known as Krambambuli since his student days When Leopolds parents arrive on the scen his father speaks to Kathrein and realizes that she is in love with Stefan the Kellermeister at the Golden Goose But Leopolds mom has already told Stefan that Leopold will marry Kathrein and because of this Stefan now wants to leave the Golden Goose