George d’Esteve, an officer of the African army, while on leave of absence in Paris, meets a beautiful young girl, Louise, who makes a deep impression upon the young soldier. Wishing to keep his true identity from the knowledge of the girl, he disguises himself as an artist, and takes apartments in the same house where the young girl resides with her parents and her young brother, Joseph, a real street Arab of Paris. Our young heroine is not insensible to the protestations of love on the part of George, but the ever vigilant Joseph decides to keep a keen watch upon the young soldier, and, if possible, to clear up the mystery which apparently surrounds the lover of his sister. Clinging to the back of George’s carriage one day, Joseph follows him and ascertains the real identity of the young man, and, of course, is overwhelmed with surprise when he sees the abode of the young soldier. At about this time General d’Esteve, George’s father, receives a letter from General Buggand, asking him to send his son to his staff office. This is a fine opportunity for George, and his father, of course, expects his son to learn the news with the greatest joy. On the contrary, however, he is amazed to see that the news greatly depresses out young friend. George realizes that he must obey the command, and accordingly writes to Louise, who is thrown into a deep despair at the news of her lover’s departure. The tactful Joseph, however, unable to bear the sight of his sister in grief, visits the General and tells him the whole story of the love of young George and his sister. The General scolds his son severely, but when the beautiful young girl is brought before him, her grace and loveliness so charm him that he at once gives his consent to the marriage, and no one dances more joyfully at the wedding than the clever little brother, Joseph, the Street-Arab of Paris.