Lieutenant Ville Somero investigates a sabotage at a fortress site on the Karelian Isthmus in the summer of 1939. His suspicions are directed at the guests of a nearby guesthouse. Aarno Teräs an engineer leading the fortification site, and his bride Birgit Lahti get into trouble because of a band of spies and dancer Veronica Sorrento.

Pete and Runt travel to Lapland to hunt the snowman in the hope of a cash reward, and take Justiina along as a bait.

Three brothers, all with their own problems that could be solved by money, try to come up with a plan to get they share of their uncle's fortune. Then a murder takes place and it is the job of a detective to find out which one of the brothers did it.

Pekka is given the task of renting a summer place, but real estate agent Aadolf Muikku tricks him into buying a villa.

The film tells the story of the romance between the timber rafters and widow Kaisa, her daughter Satu and Katri from Karkela. Problems are caused by the men in the village, especially the Master of Karkela, who has his own plans for widow's land.

Set in early 16th century Finland, a knight Olavi Gideoninpoika meets Mirjam Raakelintytär and falls in love. Mirjami hides in a monastery disguised as a choir boy, but is revealed by a monk Rasmus, who also desires her, and is put on trial.

Justina urges Pete and Runt to get a job. As a result they meet an orphan boy named Otto while working as a park nannies. They offer to shelter the boy, but at the same time the father Antti, who has returned from the sea, is looking for his son together with Miss Raikas.

Building and launching the cruise ship M/S Finlandia