After a weekend of dancing and camping on a recreation island near the city, a young factory worker decides to stay and cut work for a day. Walking around the now deserted island, he meets a beautiful woman camping alone and sunbathing in the nude on the beach. A hot romance flares up between the worker and the more upper-class married lady, lasting through the light-filled nights of the whole summer week until the woman's much older husband returns to the island the next weekend.
Heta, the strong-willed daughter of the Niskavuori family, who is pregnant, marries Akusti, a farmhand, and remains bitter toward Santeria, who broke her heart. Heta and Akusti begin their life together on the modest Muumäki farm, where they are assisted by their loyal maid Siipirikko.
St.Petersburg, 1830. An arrogant Finnish baron is playing cards with a Russian officer. Needless to say, the Finn wins and the Russian gets extremely annoyed. The situation is not helped by the fact that the baron has been seeing a girl that the Russian officer has also set his eyes on. They decide to have a duel and after the Finn wins fair and square, he has to escape because the untrustworthy Russians are after him.
