Helen Perzon

Someone has broken into their country summer house. This shakes up the parents. But Nina's fantasy is triggered, learning the break-in is done by an 11 year old boy, running away from home. With the code name Zeppelin, she learns him to know.

An unfaithful servant in the Norwegian Petroleum Directorate tries to sell top secret information to German industry leaders. Egon has a plan to earn money on the transaction himself.

With the help of a corrupt diplomat the Olsen Gang plans to rob the World Bank, with help from the re-schooled Dynamite-Harry, now a computer expert.