Diane is married to Julien, an architect. The two met in Czechoslovakia before marrying and moving to France. Julien becomes extremely jealous when he suspects Diane of having a lesbian affair with a ballet dancer. His incessant questions and insane jealousy make Diane resentful to the point she considers pushing him off a cliff.
A man is shot down in a provincial airport. Despite his wounds he manages to drag himself to his plane bound for Italy, unaware that the killers are already waiting for him at his destination. During the flight he reminisces about the events that led him there. His name is Matou and he was a Formula 1 champion before being banned from racing circuits for causing a fatal accident. Matou ran away in the company of Lena, his employer's girlfriend. But while they were in the open country they got shot at by mysterious pursuers, which was the beginning of a wild manhunt.
Two young French officers get lost in the Sahara desert and find themselves prisoners of Antinéa, who rules over the lost city of Atlantis. Under her evil influence, one of them, blinded by his love for her, loses his mind and goes so far as to murder his comrade... Jean Kerchbron adapts Pierre Benoît's book for this film, which is more concerned with social reflection than fantasy.
