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.
Egon Olsen is commissioned to help a baron with an insurance fraud. As the dividend can finance Basse's wedding, even Valborg accepts the plans.
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.
