Dr. med. Peter Lind is a young, partying model doctor who, despite an extensive and wealthy female clientele, is getting tired of the monotony of medical life and is therefore planning to go on a long trip abroad to experience adventure. His wife Vera is very unhappy with this plan. Peter and Vera have recently divorced after four years of marriage and are therefore better off than ever. Since they cannot agree on whether Peter should travel or not, they choose fashion writer and theater critic Martin Steen as their umpire.
The celebrated actor George Bergmann has four divorces behind him. When his four former wives get the impression that he is cozying up to a very young actress, they feel that they must take action. However, this leads to various misunderstandings and complications, which partly involves the former wives' new men and partly the young girl's strict parents.
During World War I, the engineer Torben returns home with secret papers from the Russian Tsar to the courier Tuschin, Torben's best friend. Tuschin is found murdered, however, and to solve the murder, Torben stays at his hotel. Here he meets several mysterious people, not least the breathtaking stenographer Inge. But in the hotel, no one is who they pretend to be.
