In the 1800s, a stormy love relationship develops quickly between a young medical student and a woman believing herself to be the daughter of his scientist uncle, the student having never heard of her before their chance encounter and both unaware that she is the result of the scientist's illegal experiments with artificial insemination..
Two nine-year-old girls—rude Luise Palfy and respectful shy Lotte Körner—meet on a summer camp. Apart from their different hair-do, they look alike. They have never seen each other before, but soon find out that they are identical twins. It turns out that their parents divorced, each keeping one of the girls. They decide to trade places at the end of the summer. Lottie curls her hair, Lisa braids hers, and both go off to where they have never been before. The adventure begins.
Leopold, head waiter at the "Weißen Rössl" (White Horse Inn), is secretly in love with the owner of the restaurant, Josepha. But she's only interested in the lawyer Dr. Siedler. Jealous, Leopold comes up with a plan to gain Josepha's attention.
Alois Wimpflinger is the mayor of a village located in the Bavarian Alps. This grumpy but kind-hearted man is happily married to Wally and the happy father of Stefan, himself happily engaged to a charming village girl. All this sounds too idyllic to last and it doesn't! Put the blame on Christine, an unexpected visitor, who happens to be both a beautiful young woman and a talented dancer. All the men go off their heads and all the women lose their temper as soon as they see her. A cute pink little brassiere lost will be the final straw...
Paying a rare visit to her estate, a countess clashes with the man she hired to manage it.
Head waiter Leopold has been secretly in love with the hostess Josepha for a long time, but she only has eyes for Dr. Siedler, a guest in the White Horse Inn. Leopold tries to get Dr. Siedler interested in the daughter of Industrialist Giesecke, who would rather see his daughter married to Sigismund.
