The Olsen Gang becomes millionaires. Unfortunately for the gang, their arch-enemies, the King and the Jack, are planning to steal the money for themselves.
The Olsen Gang has to pay for their summer vacation in Spain, and Egon is hired to open a safe with black market money in Switzerland. He is conned, but Egon has sworn revenge.
The Market of the Unknowns is a burlesque and socially critical tale of a flea market in Oslo, which is organized for the benefit of slum dwellers in Lima. Based a on novel by Åge Rønning.
The Olsen Gang is robbed in Spain and loses the millions they earned from their last heist. Egon has a plan to get the money back by robbing the National State Railways for a gold transport.
