The story of Stanisław Wokulski, a wealthy merchant who falls in love with a haughty aristocrat, Izabela Łęcka. Causing a misalliance in the late nineteenth century Warsaw.

Young Wokulski is forced to work as a waiter, while dreaming of a life in science. After taking part in the failed uprising, he is sentenced to exile in Siberia. Upon return to Warsaw, he becomes a salesman. Marrying the late shop owner's widow, he becomes rich, He uses his money set up a partnership with a Russian merchant, met in the exile. The two makes a fortune supplying the Russian army.

Wokulski falls in love with Izabela, daughter of the bankrupt aristocrat. In his quest to win her, he ventures theatres and aristocratic salons. To help her financially distressed father, he founds a company with the aristocrats as shareholders. Wokulski ability to make money is respected, but his lack of social rank is often brought. Izabela eventually accepts his affection, but without true devotion or love.