A film centered around a popular Finnish song book. Young lovers Pirkko and Pekka break off their engagement at the end of an evening spent at a dance restaurant. At home, Pirkko finds a songbook in her room, whose songs turn into musical scenes. The night watchman carries the songbook with him, and it ends up, via a sad prostitute, a police officer, and a night shelter resident, with Pekka, who is waiting for Pirkko's forgiveness and comes to pick up his fiancée.

Three sailors rescue Carmen, who has fallen into the clutches of the white slave trade, and also manage to destroy a drug gang.

Vuokko takes shelter from a thunderstorm in a fishing hut and meets a mysterious man whom she suspects is the smuggler Rompan Eetu. Instead of reporting him, Vuokko decides to follow him to Helsinki to the smugglers' hideout on the condition that he agrees to turn himself and his comrades in to the police.

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.

A comedy about a poor artist who is accidentally accused of the murder of his fiancee.