Bob Letellier, a good looking rich kid who studies science, makes the acquaintance of Alain, a cynical and immoral young man. The latter introduces him to the existentialist circles of Saint-Germain-des-Prés. Bob is invited to a party and becomes Clo's lover, a rich heiress.
A 4-year-old child is the element from and around which the action develops, and brings sentiments and emotions to light. The French word révélateur" describes the prodedure to develop or "reveal" film negatives.
At the end of World War II, a French pacifist is arrested for refusing to fight. In prison, he befriends a German priest arrested for murder of a French Resistance fighter. They discuss morality, obedience, and religion.
Largo Winch, the newly appointed CEO of the W Group, is accused of crimes against humanity on the very day he announces his intention to sell his corporation and use the proceeds to create a humanitarian foundation.