The Principality of Wallachia with the capital Bucharest (today a region of Romania) before the Revolution of the year 1848. A couple of secret societies are working to chase away the Prince Gheorge Bibescu from his throne, arms are transported on secret ways, preparing the first popular revolts in Bucharest, as the first act of the Revolution of 1848, which revolution is the first impulse of the later act of the Union of the Wallachia with Moldova (Romanian United Principalities in 1862, Kingdom of Romania in 1881 and Kingdom of Greater Romania 1918, with Transylvania, Bukovina and Bessarabia).

The kidnapping of a Viennese banker and his daughter threatens to trigger a diplomatic scandal, which could result in the entry of Austrian armies into the country. Margelatu thwarts this attempt and clears up the story.

A young girl is cast for a musical comedy, but she refuses after her father doesn't let her play in it. After that, more offers emerge, along with a hit song dedicated to her from a infatuated admirer.