The daughter of Prince Rafaello, an impoverished nobleman, is growing tired of life on account of her lonely existence. One day a young American millionaire, named Endicott, spending a part of his vacation in Venice, passes her in a gondola as she is sitting on the balcony of her beautiful residence. He falls in love with her and that night returns and serenades her. She throws him a rose and Endicott, after making inquiries as to whom she is, starts out for Rome to locate her father. A few days later the princess receives a letter from her father saying that he is returning with a young American millionaire whom he wishes her to marry. The princess is heartbroken, not knowing who he is, but her sadness is soon transformed into joy when her father returns with the man who had serenaded her.