The old man at the Eirtola house warns the new maid Eriikka about the fate of Jenny, the summer girl. Jouko, a university student from Eirtola, arrives home for the summer and begins to court the pretty maid. At the cattle shed, Eriikka finds a box, the contents of which she examines together with Pastor Tuomo Ahomaa. The tragic fate of Jenny, the summer girl, is revealed.

Traveler Severi travels to Helsinki to enjoy some culture, where he meets Sinikka and Simo, who run a buying and selling business. At a customs auction, he buys a painting that businessman Kehveli and his assistants also have their eyes on.

Pekka Puupää and Pätkä, who return to Helsinki from an unsuccessful variety show tour, are forced into refresher training, where they are trained as frogmen. During the diving exercises, the friends encounter the mermaid Helmi, whom they help into the bathtub at home, to Justiina's shock. The friends, who have become civilians, eventually end up on a plane bound for Suez, being cornered by UN soldiers.

The musical comedy tells the story of two friends about Usko and Toivo, both of whom happen to have same surname, Lahtinen.

Two Finnish PI:s are hunted by a gang specialized to counterfeit banknotes from Malaga to Finland and Mallorca and back. The counterfeit money printing plates are desperately searched by the gang and our heroes try to hide from them by travelling to Mallorca, where some of the local hoods try to kill them and retake the missing plates.

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.

Pete and Runt misinterpret the messages of a career choice machine and try to create a career as African dancers.

Pekka Puupää and Pätkä involuntarily end up in Suez as peacekeepers. After saving the Caliph's daughter Suleiman from kidnappers on two occasions, the Caliph magically reunites the friends with Justiina.

The unlucky layabout Isarkar Keturi brings a criminal gang to heel with the help of his assistant Mikael. He frees Irma, the daughter of mining magnate Tömstet, from captivity and a forced marriage to Kurt. Irma achieves her dream of becoming a pop star, with Isaskar's help.

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.

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

Young Anna marries Tuomas, an old widower. Tuomas reluctantly sells his forest to the boss of Ruukki and is forced to take in a group of loggers, among whom the handsome womanizer Humu begins to seduce the young mistress of the house.

Trade counselor Lillukka leaves his entire fortune to Pekka Puupää, who, thanks to cartoons and films, has become closer to him than his immediate family, who are pursuing their own interests. Pekka starts running a toy factory and hires a freckle-faced bowling boy as the company's errand boy. Widowed trade counselor Gunilla Lillukka tries to get married to Pätkä, who has been promoted to assistant director.

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

Amanda and her cousin Eliisa run a food stall for the loggers, despite the crooked landowner Remander. Verneri, a street vendor from Karelia, and Olavi, who pretends to be a vagrant, turn the women's heads. When university student Oswald arrives in town, long-buried secrets begin to surface.

After a robbery, a gang of bandits led by Kulaus-Ramperi flees Helsinki on the Kuopio express train "Lentävä kalakukko" and tries to hide in the crowded train filled with music and singing. The cheerful conductor Saastamoinen protects the motley crew traveling on the train.

Justiina Puupää drives her husband Pekka and his friend Pätkä to look for work. The two decide to make money the easy way and try to have an accident after first getting accident insurance. After trying their luck, they hurt their heads and in the hospital, the comrades see each other's more outrageous antics.

Justiina pushes Pekka and Pätkä to take painting lessons after realizing that art can be a way to earn a living. With the help of the yard children, a painting is created that wins first prize at a contemporary art exhibition. In the meantime, the men, along with their assistant Miss Kaihokielo, have been charged with art theft. After the misunderstanding is cleared up, the Puupääs use the art prize money to convert the house's bomb shelter into a children's clubroom.

Pete and Runt set up a kindergarten at their home, and unknowingly end up taking care of a kidnapped baby.

Justiina gives lessons to friends who are avoiding work and sends them to work. Pekka and Pätkä end up in a woodworking factory, where their job is to nail together the legs of a Christmas tree. The men think they will get rich this way, but through misadventures they end up in many different jobs and being chased by a crowd of admiring women.