Svein Kalvø

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.

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.