Max, who dreams of adventures, abandons his studies at 18 to become involved in the navy. He becomes the sailor 512.

When a real-estate promoter attempts to take over the homes of two electronics whizzes and boot them out, they contrive ingenious ways to inconvenience and harass him. By pooling their knowledge, they are able to pull off a crucial robbery using a very special box of chocolates.

A father plans to kill in the same day the nine members of the jury who condemned his son to death.

Max, Michel and Nicole: three high school students, three victims. The first is a victim of himself, the other two are victims of having known him. As some people collect stamps, Max collects newspaper articles, recounting the exploits of certain "racketters" who sign their misdeeds with an ace of spades.