Karsten and Petra are on vacation in Malta when they find a mysterious golden ring. Together, they try to find the owner, but what if the ring is from Atlantis?
| Actor | Role |
|---|---|
| FFredrik Søyseth DæhlinKarsten | Karsten |
| OOlivia EikPetra | Petra |
 Hilde Louise AsbjørnsenFrøken Kanin (voice) | Frøken Kanin (voice) |
 Scott MaurstadLøveungen (voice) | Løveungen (voice) |
 Håvard BakkeDelfin (voice) | Delfin (voice) |
 Mads OusdalMorfar | Morfar |
 Ida Ursin-HolmHilde | Hilde |
 Vebjørn EngerHarald | Harald |
 Lisa TeigeMaria | Maria |
 Alexander EikPedro | Pedro |
| MMaximilian Siljan-KermitPawlu | Pawlu |
| RRoss KolbyRodney | Rodney |
 Frida CauchiAmathea | Amathea |
 Marysia S. PeresKatarina | Katarina |
| CChirizaya AttardAgatha | Agatha |
| JJoe TantiIndri | Indri |
| FFrida GauchiAmathea | Amathea |
| CCharlotte StafarceElena | Elena |