Charles and Barbara are a devoted couple who, in seven years' marriage, have never spent a night apart. When they come up to town for a family engagement, an urgent business appointment obliges Charles to let Barbara go on without him. Left alone and bored in the hotel, Charles agrees to accompany a man-about-town friend to a nightclub. He gets helplessly drunk among dubious company, and come the morning finds that a hangover is the least of his problems..!

Fritz is in love with artist Glay, who stays at the Grand Hotel. In spite of not having any money he gets to know her, invites her to supper and after dancing a tango even hires the royal suite. How will he get out of this is a mystery even to himself.

“The Red Cat” is a seedy dive. The rich American, Jefferson, who shows up there one day with his family and who recently became the proud owner of the famous Halifax emerald, particularly attracts the attention of the patrons of the “Cat”. One of them approaches the Americans disguised as a marquis, but he has not reckoned with Jefferson’s daughter, Jessie.

Underwear manufacturer Livius Heintze is a vehement anti-alcoholic and thus is very much against the marriage of his daughter Hedwig to the brewery owner Raumert. Heintze's second, illegitimate daughter Emmi also wants to give her father a heart attack by marrying the hops merchant Seidl.

Newlyweds Käthe and Max met while studying law. Trouble ensues when Max takes on his first case without telling his wife.