Olsen Et Sa Bande Le Trésor Du Sous Marin

Norwegian engineers are searching for oil and Egon Olsen convinces his friends to buy stocks in the oil market. In the process, Egon, stumbles upon a scheme to fool the Norwegian Government that there is indeed no traces of oil in the North Sea. The Olsen Gang tries to tell the ministry the truth about the oil but they are caught by Sheik El-Altan who, in order to make sure the boys keep their mouths shut, kidnaps Valborg and brings her to Egypt.

When the twins feel like their mom is tired of them, they take off on an exciting adventure to grandmother's house and encounter a pair of villains along the way.

On the orphanage Lykkebo, Egon sits and wants a real family - a mother and a father like Kjell has. The rich couple Gyldenløwe picks out 5 boys they consider adopting, but with a little sabotage Egon himself get picked. Suddely Egon is the rich son with a swimming pool and a big house. What Egon don't know is that Gyldenløwe has exchanged a million dollars for all the papers on Egon Olsen.

The Gang form The Dynamites. After winning a talent competition they are told by manager Pop-Johansen that the band will be huge in the U.S. But is he only after their prize money?

Follows the Junior Olsen Gang as they hunt down missing tax money stolen from a bank in 1835.