Sickan, the leader of the criminal Jönsson gang is incarcerated in a mental institution, attended by Dr M.A. Busé, who admire a handbook in crime that Sickan has been writing. Blackmailed by the nefarious banker Wall-Enberg, Dr Busé and Sickan's partners Vanheden and Dynamite-Harry execute Sickan's plan of stealing the valuable Black Diamond of the Romanovs from the National Museum.

A botched burglary leads to the arrest of the Jönsson gang’s leader, Sickan. After serving ten months in prison, he is released and unexpectedly recruited by the enigmatic banker Wall-Enberg Jr. to steal the legendary Bedford Diamonds in Switzerland. Though Sickan successfully carries out the heist, he is betrayed and nearly captured. Returning to Sweden and reuniting with his old accomplices, he sets out to take calculated revenge on the man who double-crossed him.

Sickan, Vanheden and Rocky try to rob the Berns nightclub one night, but Vanheden has made the mistake to invite his constantly drunk cousin, the old dynamiter Dynamite-Harry and he ruins the plan. Sickan is arrested, and has to spend 10 months in a small, locked room. When he is released, he has a new plan, but Rocky and Vanheden have decided to go straight. Together with Dynamite-Harry, Sickan plans to rob a cold store, managed by their arch-enemy, Wall-Enberg.

In 1944, Cederqvist comes to a small cloth factory to see how the all-women employees can work more efficiently. At the beginning he is greeted with suspicion and his efforts at courting the young ladies are futile. But as soon as he buys himself a car it becomes much easier, especially since he has the power to relocate people to an easier line of work. Plot by Mattias Thuresson.

Sickan has a new plan. This time, the gang are going to steal a small computer micro chip which contains a top secret plan of what the government intends to do with Sweden in the future. But, Wall-Enberg is also planning to steal the chip. The payment will be 55 million Swedish crowns in gold and diamonds to whoever can deliver the chip to the foreign investors. Who will grab hold of the chip, the Jönsson gang or Wall-Enberg?

Vanheden and Dynamite-Harry are approached by Sickan's grandmother and Sickan's younger brother Sven-Ingvar. Their evil nemesis Wall-Enberg are planning to steal billions of euros of the European Union's grants to culture. The grant of 350 million kronor, paid by an Italian bank acting as intermediary, equals 60 billion lire but through assistance of a Sicilian "businessman", this sum becomes 60 billion kronor when transferred. The money is to be transferred to a large number of bank accounts, and the account numbers are saved on a floppy disc that the Jönsson gang is trying to steal.

When Vanheden and Dynamit-Harry tries to break doctor Busé out of jail, they get Herman Melvin instead. He has been working at the Swedish Mint and the doctor, who has started to think like Sickan, has written a plan for making a burglary there, on Melvin's back. However, something goes wrong. They don't get a lot of Deutsch-marks as they planned but instead, they end up on a ship going to Poland, together with bunches and bunches of Polish Zlotys (the Polish currency). In Poland, they discover that the mafia are very interested in that money and Wall-Enberg is working with the mafia.

Stig-Helmer and Ole Bramserud on a trip to the Canary Islands for Christmas.

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.

Glenn and Gloria are a couple who seek escapism via their daydreams.