Simple mortel 1990

A young man, a researcher in ancient languages, begins to receive strange radio messages in a language only he knows. The messages ask him for very bizarre missions. Eventually, he understands that he's just a pawn in an intergalactic game, and that the fate of Earth depends on him.

Cast:

Philippe Volter
Stéphane 

Christophe Bourseiller
Fabien 

Nathalie Roussel
Brigitte 

Roland Giraud
The expert