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

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.

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.

Composer and program director Harri forms a quartet, recruiting Apon, Teika, Kauko, and Olli as members. Based on an idea from Olli's beloved Raija, the ensemble is named the Kipparikvartetti.

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.

Professor Derek Wytycky and his son Hans, who are immersed in the study of Indian poetry, wake up one day to find that the mother of the family is nowhere to be seen. When their housekeeper Gloria also leaves, having had enough of the absent-minded men, father and son hire private detective Mademoiselle Catherine Anaconda to investigate Mrs. Wytycky's disappearance.

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.

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

Engineer Kallio, who is searching for uranium, arrives at the summer hotel owned by Director Lehtelä, accompanied by his assistants Joltinen and Pummi and painter Väinö. The manager's daughter Anni, his wife Mammi, and hotel employee Sirkka try to figure out the guests' secret identities.