Erkki Poikonen

A man's body is found on Tähtitorninmäki in Helsinki. Palmu starts to investigate the case, but the scandalous newspaper story causes problems for the police.

Dr. Aitamaa is spending holiday with his family at their summer villa. He accidentally reads a letter that was meant to his wife. The letter is from another man. Aitamaa follows his wife to the city and finds out that she has a lover. Later the wife is found killed and Aitamaa becomes the prime suspect.

Kaarina, an orphan girl raised by Taneli, the innkeeper, notices that her friendship with her childhood friend Antti is turning into romance. Henrik, the patron, also has his eye on Kaarina.

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.

Juha lives together with younger woman Marja. Juha loves her, but Marja seems to belong to somewhere else. Things get complicated when casanova Shemeikka arrives from strange lands and takes Marja away with him.

Esko is going to a neighboring village to marry Kreeta after her father arranged the marriage with Esko's father. Esko takes Mikko as his travel companion and that's where Esko's ordeals begin.

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.