The young Mathilde de Marsan, believes she is in love with a singer, Philippe Mazières, and steals his photo. This one, who had written a song start, searches for this photo as far as the castle of Geoffroy and Estelle de Marsan, where Mathilde's uncle and aunt take him for the husband of one of their guests, Claude Cartier. and will finally marry her while Georges, Claude's ex-fiancé will fall in love with his hosts' niece, Mathilde.
Jacques Montet, a successful crime story writer, has already written a hundred books and would like to call it quits now to devote himself to loftier writing. But his wife, a cold-hearted, money-minded, bossy woman won't allow. All the more as she is the one who supplies Jacques with the plots of his detective stories. When Jacques, yearning for true love, meets young, pretty Muriel, he can't stand the situation any longer. Fortunately - for him - the plot of the 101st detective story imagined by his wife is about a ... perfect crime. He simply has to follow her instructions to ... get rid of her. Everything goes according to plan until Jacques discovers a scary detail: the presence of a mysterious witness on the scene of the crime.
Mr. Dupont, after numerous disappointments in his self-esteem, decides to seek his fortune in Africa. Hired as assistant director in a Prisunic at A.O.I., he begins to sell the plane ticket paid for by his new employer. The boat trip cost him a month's delay and legal proceedings for fraud. Panicked, he decides to flee into the bush where he is sometimes the victim, sometimes the hero of his adventure. Finally, Mr. Dupont, returning to a civilized country, finds himself obliged, in order not to risk prison, to agree to return to the service of the director of the Prisunic as a valet. When he leaves this difficult boss, he only finds a job as a sandwich maker in an exotic cabaret. He is forced to disguise himself as a Black man.
