As always, Sickan has come up with a new plan. This time he wants to rob the IKEA furniture store. During their nightly break-in Sickan discovers that the store is used as a secret smuggling central for sending American computers to the Soviet Union. The computers are picked up by Soviet submarines sneaking into the Swedish archipelago. Naturally, it is their arch enemy Wall-Enberg who is behind all of this.

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.

The criminal police is investigating a criminal gang blackmailing restaurant owners.

Vanheden and Dynamit-Harry, together with Harry's fiancée Doris, are in Mallorca while Sickan is still in Stockholm. However, Wall-Enberg talks him into doing a break-in at Las Palmas cathedral in Mallorca. Once persuaded, he can't resist the temptation and travels to Mallorca as well. However, Wall-Enberg obviously can't be trusted. Sickan is framed, caught and put in jail. While being escorted home to Sweden again, Vanheden and Harry sets up a plan to break him free. Sickan, once free, wants payback. The gang discover that an antiques dealer called Germann has something to do with the whole thing and that she's also collaborating with Wall-Enberg. The gang then decide to take a closer look at her and her antiques and they discover that there's a heist being planned against the cathedral in Palma.

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?

Father Gustav, mother Lena and children Lina and Max celebrate everything but a peaceful Christmas. A really merry Christmas with the Svensson family.

Charles Ingvar Jönsson gathers three criminals to take vengeance upon the people who killed his uncle.

Following a failed heist, Charles-Ingvar ‘Sickan’ Jonsson ends up in prison. Once released, his gang have become law-abiding citizens and Sickan has to continue on his own. Crime broker Anita tasks him with a simple burglary, but it turns out to be something a lot bigger than Sickan thought it was. Now he needs the help of his past accomplices to carry out the most difficult heist in the history of the gang.

The Swedish IB (Information Bureau) agents Henry Malm and Richard Ramberg travel to the Finnish-Russian border in order to receive a KGB agent who wants to defect.