Young inventor Janne is lonely. He falls in love with beautiful girls, but his feelings are not reciprocated. Heartbreak and failure rob Janne of his will to live.

Mattila's relatives Konstu and Fransi travel to Helsinki to meet their friend Kalle Liljepeki, who runs a failing general store in Sörnäis. The companions get Maiki, the daughter of the house, and Sundi, a forest consultant. A lot of misunderstandings arise and a story about the devil in Kalle's shop.

During the decisive weeks of the Winter War in February-March 1940, Suomi-Filmi produced four War Jokes, cheesy propaganda entertainment, by "those great grins" Tatu Pekkarinen and Matti Jurva. The first War Jokes is from the beginning of February. At the beginning, Jurva sings about the evil eastern direction. "The Iivanas are digging trenches on the Isthmus... Whoever starts with a shovel, ends with a spoon..." The second part is Jurva's bravura. In front of the trench, he performs a foxtrot with a balalaika in a red star cap: "Njet Molotoff, njet Molotoff, you lied more than Bobrikov himself..."

In February-March 1940, Suomi-Filmi produced four Military Jokes, sleazy propaganda entertainment, by "those great grins" Tatu Pekkarinen (1892-1951) and Matti Jurva (1898-1943). The third Military Jokes was screened at the end of February, two weeks before the end of the Winter War. In addition to Jurva, Hannes Veivo, Onni Veijonen and Kirsti Hurme appear. The themes of the jokes: bad things come from nothing and one's own help is the best help. Dinner in a Soviet paradise: before a cabbage field blossomed on the Russian doorstep, now a political truck feeds him with its words. The neutrality guarantee and security guarantee are mocking Sweden and England. Over the city, Moscow casts its shadow...

Matti Jurva and other performers perform a joke about the Terijoki government.