A poor ditch-digger, Pietro Massena, lovingly raises his motherless daughter Rosina. Phil Griswold, in order to throw a party to celebrate his expected inheritance, induces his friend Robbins to rob the flower shop where he works. After the inheritance goes to Phil's brother William, who refuses Phil money to return to the flower shop, Phil abducts William's daughter Dorothy and sends a "Black Hand" ransom demand to throw suspicion onto Pietro, who earlier frightened Dorothy when he delivered a Christmas tree to William's house. William drives into the slums looking for Pietro and accidentally runs down Rosina. The grieving Pietro goes to the flower shop on Christmas morning to buy a rose for Rosina's coffin and is accused of the kidnapping, because Phil arranged to have a man known by "the sign of the rose" pick up the ransom money there. Pietro threatens to kill the arresting detective so that he can return to his "bambino," when William arrives with news that Dorothy has been found. William offers Pietro compensation, but he refuses and sorrowfully returns home.