Spies from several countries try to find out what secrets are hidden in the mind of a young amnesiac girl who has appeared in Paris.

Kara Ben-Nemsi, friends and rescuers set out to free a young relative of the guardian of the treasure of the Chaldaeans (Christian sect), who is captured for that fabulous ransom.

A policeman is not convinced that the prime suspect in a murder case is realty guilty and so decides to reinvestigate the case, despite the lack of co-operation from locals.