A film about two rival student groups making their own Olympics. The student chairman Pena recruits to a boxing match the insect researcher and bookworm Matti Kiviaho, mainly to embarrass him before his girlfriend Laila. During the summer young people preparing for the games practice both for sports and romance.
Wager is Count Mauritz Armborg, the young master of the estate. Linnanheimo plays Katariina (Catherine) the nanny to Mauritz's nieces and nephews. The two fall in love and decide to escape to Italy via Denmark where they have planned to get married. There are always complications because Mauritz's grandmother doesn't want him to marry below him - she has decided that Mauritz is to marry the Swedish beauty, Ingeborg Liliecrona.
Liisa and the renowned composer Raimo Kaarna are fond of each other, but in Kaarna's family history, everyone does not accept the relationship. In addition, Liisa has her own doubts, and a secret that does not endure the daylight.
An artist bases a painting for a revealing lingerie ad on a photo of a girl he had found torn from a magazine, not knowing that the girl is in fact the daughter of the Finnish minister of finance. A scandal is about to erupt, and the artist is given 48 hours to find a strikingly similar-looking female model who could serve as his alibi. The minister's daughter decides to fool the artist by pretending to be a lowly girl of the streets, whom the artist then recruits as his "model".
The holiday of Pharmacist Himanen and Lieutenant Paavo Kehkonen turns into a nightmare when they pick up Station Chief Viirimäki, who is in a hurry to get to work. Their boat engine dies and runs into the rocks, leaving them stranded on an island with no clothes. Posing as a woman, Himanen gets to know the police chief's daughter Alli, but as a result of coincidences and misunderstandings, the two men end up in jail, each suspected in turn of being a fugitive Vikström.
