Catherine's lack of worldliness prevents her from realizing that the young man proposing to her is not entirely drawn to her by her charm. Catherine's father, a successful doctor, sees through the fortune hunter and forbids the marriage, but his daughter proposes an elopement that fails to materialize because the young man knows most of her expected fortune will go elsewhere if he marries her. Catherine retires into a little world of her own. But the fortune hunter turns up once more and again proposes to her. For a moment, Catherine leads him to believe that she will accept him, but when he calls by appointment, she locks the door, blows out all the lights and allows him to realize that she will not be fooled for the second time.