Marcel Perez and Nilde Baracchi are blackmailers engaged in the badger game: each gets a member of the opposite sex into compromising positions, the other partner takes a photo and snap! Pay up or we tell your spouse.
It's not a comedy, but a straight drama. Perez' Robinet character had grown so popular, though, that the production company released it referring to the character. It must have confused people who expected Perez' beautifully performed comedy gags.
It's evidence that, although people claim that comedy is not important, that only dramatic situations can produce great art, that comedy is something in and of itself. Anyone can scowl and point and make an impression in a dramatic piece. How many can perform a pratfall and bounce up again, making us howl with laughter?