A journalist who deals with the column "courier du cœur" has the absurd idea of ​​launching an investigation into the death of a pianist whom he claims to have been murdered. To dazzle his wife, a reporter for the newspaper, he disguises the facts in such a way that the police suspect him, then declare him guilty. It takes a number of adventures to get him out of this mess and get him back into his section.

Father Sourire, who came to the Château de Villetaneuse to ask for alms, was forced to put on the uniform of the nephew who had fled from the barracks. A soldier in spite of himself, he knows the most frightening adventures which even lead him to a boxing fight from which he will emerge victorious.