Piédalu, a bumbling yet endearing character, finds himself in hilarious situations as he navigates the streets of Paris.

Jules Duraton is the headmaster of Chatelbourg's high school. He is happily married, has a teenage daughter named Solange, and everything would be for the best of all possible worlds if he and his family were not the namesakes of the protagonists of a famous comic series broadcast every day on Radio Monde "La Famille Duraton". Day after day, the real-life Duratons are made fun of because of their surname and Jules just can't take it any more. That is why he decides to sue the radio station responsible for his misfortune.

After her mother's death, Liselotte is taken in by an old sculptor, but some distant cousins, brutal farmers, obtain guardianship of the young girl. Unhappy, she flees and finds refuge with a young shepherd living on alms.

Benoit, the head guard of Clouville Prison, prefers to be liked than feared. This basic principle transforms the jail-house into a joyful prison, where all the inmates live amicably together. Among them, various colorful characters : a farmer, a poacher, a distiller, a forger, two pickpockets, a safe-cracker, a gangster and... a good-looking guy who pleases Rosette, Benoit's daughter, well. But too much leniency takes its toll : after Vauclin, the gangster, manages to escape and a complaint is filed against "the deplorable disorder reigning in the joyful prison", Benoit is given early retirement. He will know how to take advantage of his new status live a joyful life with his wife, his daughter and André, his son in law, in fact the nice-looking young prisoner who, in the meantime, has been cleared of all charges.

In the 1953 elections, Piédalu was elected mayor of Marboue-Chambourcy. The esteem of his fellow citizens won him popularity, but he had to reckon with the wiles of his political opponents if he ran for deputy. The support of the son of one of his rivals, who loves Françoise Piédalu, and above all his stubborn common sense and natural malice, help him to overcome all obstacles.

Philémon De Montfilet came first in his year in the prestigious engineering school "Poly Art Technique" because of an epidemic which brought all the other examination candidates down.