Egon returns from prison with the key to a big heist, a hidden Nazi-treasure. The Olsen Gang finds the location of the treasure, but problems arise when the international criminals Carina and Ricco shows up.
Based upon true events and the novel by Gabriel Scott about terrible conditions in a foster family.
The good priest gets a mystery to solve on his way home by ship to Oslo. A crew member dies, with a final wish to help Makken, and deliver a gold watch to Lily. But Lily denies knowing the man, and is scared when she hears the name Makken.
