The Olsen Gang in a Fix

Plot

After a tremendously daring or at least badly planned and utterly unsuccessful attempt to rob a savings bank, Egon is jailed. When released, he has now been rehabilitated by the pretty social worker Bodil. He gets a steady job at a toy factory and hopes to impress by being a lawful citizen. Despite Benny and Kjeld's objections Egon is clear in his mind, and instead they also begin a life of being lawful citizens.

Although it starts well for the gang, they are eventually thrown back towards a criminal path, when they are accused of a robbery committed right in front of them in the vault of the Danish National Bank, where they serve as cleaning people, after a mishap at the toy factory. Although the police think that the gang committed the robbery, it is in fact the mafia boss Serafimo "Spats" Motzarella [sic] (Harold Stone) who sent a team to rob the vault and place the loot, allegedly the Danish crown jewels, in a cello case. It is revealed that the jewels on display at Rosenborg Castle are copies, as the original jewels were to be sold in secrecy to relieve the country's dire economical situation.

The gang, who are now really in a fix, must bring back the jewels in order to avoid the accusation. They succeed in hijacking the cello case from the airport as the gangsters are leaving the country, but the gangsters manage to track them back to their residing place, a bar in Copenhagen, which ends up being shot to pieces by the gangsters as they regain the cello case. Through a variety of disguises and diversion, the gang manage to trick the gangsters and re-repossess the cello case, but now they are not only wanted by the gangsters, but also by the officious detective Mortensen. After a long car chase and a lucky escape, they enroll Benny's heavily alcohol-using brother Dynamite-Harry, an expert in explosives, to open the cello case at a remote gravel pit.

Unbeknownst to the gang, Motzarella arrives from New York himself, joined with a task force from his German branch, to track down and wipe out the gang for good and recover the jewels. Meanwhile, Bodil herself has tracked down Motzarella, partly to use him as a new case study for rehabilitation, partly to establish the truth concerning Egon's involvement in the alleged coup at the national bank. Harry's attempt to blow the lid off the cello case accidentally blows the Germans up instead. The cello case, however, remains unopened and Egon is fuming. Finally, Motzarella arrives in a helicopter along with Bodil. The gang hand over the cello case to Motzarella who, for a small fee, facilitate the non-illegal sale of the jewels and Bodil follows Motzarella back to the states. Depressed and scared, Benny and Kjeld go home expecting to meet a fuming Yvonne, who could afford new durable goods through Kjeld's work, but after Kjeld got fired everything was seized by the debt collector. They are tremendously surprised to discover that Yvonne, with a little help from Bodil, has got all the things back.

Happy from being cleared of all accusations, Egon enters the bar and is met by a slightly nervous bartender, who is scared because the bar has been shot down several times during the course of the movie. Egon calms him down, but then Mortensen enters the bar. He is armed to the teeth and the bar is yet again shot to pieces. Mortensen arrests Egon, who is puzzled and asks why. Mortensen replies by mentioning several petty crimes committed by Egon during the hunt for the jewels, and Egon is yet again imprisoned.