Louis-Philippe Fourchaume, another typical lead-role for French comedy superstar Louis de Funès, is the dictatorial CEO of a French company which designs and produces sail yachts, and fires in yet another tantrum his designer André Castagnier, not realizing that man is his only chance to land a vital contract with the Italian magnate Marcello Cacciaperotti. So he has to find him at his extremely rural birthplace in 'la France profonde', which proves a torturous odyssey for the spoiled rich man; when he does get there his torment is far from over: the country bumpkin refuses to resume his slavish position now the shoe is on the other foot, so Fourchaume is dragged along in the boorish family life, and at times unable to control his temper, which may cost him more credit then he painstakingly builds up...
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.
Gaston Bernod is a Parisian bus driver. Honest, upright and hard-working, he is held in high esteem by his superiors. Gaston has always pampered "his" bus, going as far as to equip it with a fuel-saving device of his invention. Very close to his vehicle, he may have somewhat neglected his wife Paulette, who lets herself got round by the smooth words of Pierrot. The gigolo has indeed managed to persuade her to follow him to the Mont Saint-Michel, "a wonderful nest for their burgeoning love" as he says. The trouble is that Gaston, while driving his dear 84, catches sight of the car, and suddenly aware of his misfortune, sees red. He immediately sets off in pursuit of the culprits, involving his load of helpless passengers in the chase.
The basic premise: A retired bus driver fulfills his lifelong dream of providing an extended "voyage surprise" (the title is translated as "Mystery Tour") for unsuspecting vacationers. They soon realize, while riding in the old man's home-made bus, that he hasn't bothered to plan any kind of itinerary. As a result, they end up in completely preposterous situations, of course. Voyage surprise!
The knight Henri de Lagardère wants to avenge the death of his friend, the duke Philippe de Nevers assassinated by the prince de Gonzague, a few years before.
Denis, a poor student in philosophy, works as a night porter in the Paris market of Les Halles in order to pay for his studies. Constantly weary, he falls asleep and dreams of a beautiful girl in white, Irène, with whom he falls in love.