A lock factory worker Pertti would like to marry his girlfriend Verna, but fears they don't have enough money. His brother Martti is a member of a youth gang that is planning a robbery with three other young men. When the boys have to flee at the time of the robbery, Pertti who secretly shadowed them sees an opportunity to solve his money problem.

Lawyer Hans is having an affair with his secretary Anni and is trying to get his wife to meet another husband. When his wife falls in love with another man, Hans instead becomes jealous and realizes his true love for Ellen.

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.