While Professor Simon Sweet, a wealthy bachelor, is superintending the unloading of his baggage in front of his cottage, he meets pretty Doily. His interest in her is equaled by her interest in him. Miranda, Dolly's aunt, falls in love with the professor, and resolves to win him for herself. Dolly goes out for a walk and again sees the professor, who hastens to join her. Dolly invites him in. Miranda sees the professor, goes up to him and insists on manifesting her affectionate disposition, much to that learned young bachelor's discomfort. The professor takes Dolly for an automobile ride. Miranda invites herself along. Dolly has to sit with the chauffeur. The professor goes to sleep while Miranda makes love to him. Miranda is thrown into a jealous rage when she sees Dolly and the professor out in the garden in the act of kissing. She swears vengeance. She goes to a shrewd lawyer and enlists his aid. He tells her to hide a camera in the parlor, to which a string will be attached, and, when the professor calls, to drop a coin on the floor, making him get on his knees to pick it up and then to pull the string to take his picture; she will then have the necessary evidence to sue him for breach of promise. The professor calls a few days later and just as he is down on his knees to pick up the coin, the cat on the window jumps on his back. Miranda falls back on the sofa as she pulls the string, frightened by the dog which scared the cat. When the picture is developed, it shows Miranda ungracefully falling over the sofa, and the evidence proves worthless. Dolly and the professor, in each other's arms, have a good laugh at poor Miranda.