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.
It is a time of extreme housing shortage in Helsinki. People with room in their flats are required either to find subtenants or to lodge anyone sent by the housing commission. Abel and Jussi Siimes, two devoted haters of women, find themselves in this predicament. They need to find a subtenant quickly to avoid the possibility of the housing commission sending a woman, God forbid it, to live with them. Abel's acquaintance, an assessor, recommends his nephew Kaino as the perfect choice.
Schoolboy Klaus is convicted of theft and sent to prison. At his release Klaus feels that his life has changed a lot. Despite all his hardship and difficulties he keeps up his studies under the supervision of the grim Master Kahari.
Unexpected romance is in the air when a young woman from Finnish boarding school meets an American millionaire. This is the only Finnish film starring Miss Universe 1952 Armi Kuusela.