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.
| Actor | Role |
|---|---|
 Arve OpsahlEgon Olsen | Egon Olsen |
 Carsten ByhringKjell Jensen | Kjell Jensen |
 Sverre HolmBenny Fransen | Benny Fransen |
 Aud SchønemannValborg Jensen | Valborg Jensen |
 Harald Heide-Steen Jr.Lillegutt | Lillegutt |
| AAnne-Lise TangstadCarina | Carina |
 Ole-Jørgen NilsenRicco | Ricco |
 Per Theodor HaugenLøytnanten | Løytnanten |
 Pål JohannessenBasse | Basse |
| HHenry NyrénMats Matsen | Mats Matsen |
 Andreas DiesenMenig 91 | Menig 91 |
 Svein ByhringBensinmann #1 | Bensinmann #1 |
| KKaare ZachariassenBensinmann #2 | Bensinmann #2 |