In Paris, the beautiful orphan Henriette is kidnapped by the Marquis de Presles, a libertine, leaving her blind and defenseless friend Louise wandering the streets alone. While Mother Frochard, a beggar and thief, forces Louise to beg for her food, Henriette is rescued by the Chevalier de Vaudrey, who loves her. The chevalier's mother, the Countess De Liniere, discovers that Louise is her long-lost daughter and resolves to find her. In the meantime, Mother Frochard's son, a hunchback named Pierre, falls in love with Louise, and when his brother Jacques cruelly beats the girl, Pierre kills him. Just then, the countess locates Louise, and after the girl regains her sight, she is joined with Pierre. The countess then gives her consent to the marriage of her son and Henriette.