Is it because his father was a groom that Adhémar Pomme has a long horse head and a horse- toothed smile? Maybe but the fact is that his head has invariably caused laughter whatever the circumstances, which is the tragedy of his life. After having worked as an undertaker, a theater prompter, a casino bouncer, and so on, and failing at each job, he applies out of desperation to an institution where those rejected for physical reasons can hide and live together. But Adhémar immediately starts... laughing at them and gets kicked out as a result! In the end though, he finds his way as a circus artist.
Saint-Maurice, an ordinary peaceful village, lived healthily so much so that the local doctor's practice was scant. But that was before Dr. Parpalaid retired and was replaced by a charlatan by the name of Knock. A real genius this one, for he soon managed to persuade everyone that they were ill. And not only didn't they resent him but they even loved their physician, who made a fortune and brought prosperity to the village by turning it into a big hospital.
On this beautiful May 1st, Thérèse is about to give birth. Their presence at home is undesirable, so Jean, her husband, decides to take François, their little boy, to a soccer match. Their plans change when they meet a former factory mate who seems to have made a success of his life. This man, Blanchot, decides to return to Jean a sum of money he had once borrowed. Trusted, Jean is drawn into a clandestine circle, where his apparent luck delivers him without ulterior motive to Blanchot, who is one of the ringleaders. The police interrupt the dangerous game, putting Jean, who has no identity papers, in an awkward situation.
