A famous industrialist is murdered at a restaurant in Malmoe. Police inspector Martin Beck in Stockholm gets the case. The suspects lead to people involved in illegal arms deals. But who was the biggest criminal, the murderer or the industrialist?
A young American girl is found dead in Gota Kanal, Swedens largest channel. Since there are hardly any clues or evidence at all it seems as if the murder cant be solved. Martin Beck and his men are assigned to the case. Soon they find a likely suspect and together with a police woman they begin a cat and mouse game to catch him. Plot by Mattias Pettersson.
The feeble-minded Sven's mother dies and he gets work as a farm-hand at the rich, affluent Höglund's farm. He has to work without pay and sleeps together with the cows. He meets the disabled Anna who is the first one to treat him as an adult. One day he has had enough of Höglund's maltreatment and moves in with Anna's family. Plot by Mattias Thuresson.
It's time for Jonsson to return to his old regiment to rehearse what he learned during conscription a few years ago. He meets his old friends, platoon leader Larsson and the music loving captain 'Beethoven'. Jonsson and his comrades doesn't take it very serious - but they have a jolly good time. A female journalist follows the exercise to write an article, and gets interested in him. Plot by Mattias Thuresson.
Sweden 1958. In a small provincial town there is a band who plays dance music twice every week. All decisions are made by Sven Klang, the undisputed leader of the band. A new member joins them, saxophone player Lasse. He starts to criticize Sven's decisions, questions the way they divide the money and he also wants them to be more of a jazz band.