A valuable ruby disappears during an earthquake. Professor Ferlach is tasked with excavating the buried temple. Mysterious things are happening during the excavation and strangers are trying to stop them. The archaeologist Prof. Ferlach gets unexpected help from the animal catcher Larry Stone and his daughter Helga, who actively help with the research and excavations.
| Actor | Role |
|---|---|
 Lex BarkerLarry Stone | Larry Stone |
 Ann SmyrnerHelga Ferlach | Helga Ferlach |
 Hans NielsenProfessor Ferlach | Professor Ferlach |
 Eleonora Rossi DragoMaharani von Tungal | Maharani von Tungal |
 Maurice RonetDr. Gérard Rinaldi | Dr. Gérard Rinaldi |
 Magali NoëlGaby | Gaby |
 Franco FabriziManuel Da Costa | Manuel Da Costa |
 Peter CarstenHermann | Hermann |