Arsène Lupin (French)

Arsène Lupin decides to run a detective agency in addition to being a gentleman thief. As a detective he happens to cooperate with police in order to unveil the criminal activities of a villain.

Arsène Lupin, the multifaceted gentleman thief, steals two masterpieces from the President of the Council. Some time later, posing as Monsieur Gilles, a winegrower who is marrying his only daughter, he asks several jewelers to come to his mansion and robs them of their gemstones. The next victims of André Laroche (Lupin's new identity) will be none other than a Maharajah and Kaiser Wilhelm II himself...

Arsène Lupin and his accomplice La Ballu rob a villa. Being disturbed by the police, they have time to take a picture. This painting represents a fresco in three parts, La Ballu steals the second painting. The third painting is in the Florence Museum but when Lupin arrives, the painting is gone.

André Laroche, an industrialist, has just passed away. Face to his grave, as he is being buried, Anne de Vierne, the wife of a magistrate, confesses to her son François that Laroche was in fact Lupin and that he is his natural child. But he is not the gentleman thief's only offspring! Lupin had indeed another son by a housemaid, Gérard Dagmar, a dancer, magician and - occasionally - burglar. Which complicates the task of François who, to respect the last wishes of the testator, has gone in search of the treasure of Poldavia. For he keeps finding Gérard on his way and his efforts are constantly thwarted by his half-brother. Will Gérard prevent François from becoming the worthy successor to their father or will the two young men decide to join forces? That is the question.

Follows the adventures of Arsène Lupin, an aristocratic Belle Époque gentleman robber who preys on the rich and is kind to the poor. Fate teams him up with the beautiful and mysterious Countess of Cagliostro who is involved in a devious plot to recover the treasure of the kings of France. However, an underground monarchist network is also after the treasure.