Gravely ill, Prince Woronzeff asks a friend and look-alike, Franz von Naydeck, to replace him at the wedding of his daughter Nadia, whom he has just found, as the family covets the inheritance. Diane, who once loved the prince, doesn't betray the secret, because she now loves Franz and separates him from his pseudo-daughter, with whom he had begun to fall in love.

Baron Arnold, a businessman, takes his young wife to Africa where he instructs her to seduce Captain Olivier, an intelligence officer. But Olivier illuminates the baroness on the unsavory activities of her husband as a weapons dealer and entrepreneur of revolutions.

A proud femme fatale who works at a mountainous farm property manages, after being prodded by her lover, to become the heiress, but she plays the rival men against each other.