À l'instar d'Arsène Lupin, Monsieur Personne commet des vols à la barbe des policiers, sans omettre la galanterie envers les dames.
For some time, the police have been on the trail of a mysterious burglar who has evaded capture whilst executing one daring robbery after another. No one has any clue as to the identity of this elusive criminal and he has come to be known as Monsieur Personne.