Alain de Blomette, a family man, is in danger of becoming a deviant under the influence of his mistress Fanny Lacourt. He steals a bracelet, loses at gambling and contemplates suicide. His family intervenes and sends him to Equatorial Africa. Fanny, stubborn, joins him there, stirring up trouble on the plantation. The guns start talking. Alain's rival collapses and Fanny is mortally wounded. More devious than ever, Alain indulges in regrettable excesses. A fatherly inspector finally intervenes to instill in him a sense of honor.

A waiter, Paul, likes detective novels as he identifies with the characters, before becoming a sought-after offender himself. He flees with his group and his girlfriend Jackie

In a palace on the Côte d'Azur, a whole fauna evolves: a colonel who cheats on his wife, the colonel's daughter who flirts with Fred, Fred's friend, Emmanuel, who is in love with Marion, and Marion who kills himself. believing that Emmanuel does not forgive him for having, out of idleness, yielded to Fred one day.

During an inquest after a woman is killed, the judge suspects his own son. The woman's lover had been friendly with the son and he was also supposed to be married to the judge's daughter.