A young girl named Nancy (Clara Bow) falls in love with handsome Robert. He is to marry soon, yet Nancy develops a plan to finally get him. Nancy, an American on an unchaperoned trip to Paris, encounters Robert several times in her first day - vying for a taxi in front of her hotel, at a jewelry store, and later in a wax museum. Their mutual attraction is evident. Robert and Simone are engaged to be married, the result of an agreement between their two noble families when Robert was very young and his fiancee an infant. He leaves to spend the weekend at his father's estate with Simone and her father to plan the wedding. He had no regular contact with Simone and this is the first time he will have seen her in years. Nancy borrows a car and has it "break down" near the gates to Robert's father's estate. Robert's father invites her to stay while she recovers and the car is repaired. She learns that Robert and Simone are engaged, and fabricates her own engagement to inspire Robert's jealousy. Simone reveals that she loves another man and does not want to marry Robert but is bound by duty to her family. Simone's father takes an interest in Nancy and she encourages him. She teases Robert: "If I marry the Marquis, won't that make me your mother-in-law?" Robert has enough of Nancy's behavior and writes her a letter saying he is going to Africa on safari, leaving both her and Simone. That night, Nancy has trouble latching her bedroom window and develops a plan. Asking Robert to come in and close the window for her, she proceeds to make a lot of noise and bang the furniture around. Robert's father and Simone and her father rush into the room to find Nancy and Robert in an embrace. Simone's father is willing to forgive any indiscretions and still wishes to marry her, while Robert's father insists that Robert has damaged Nancy's reputation and must marry her himself. Everyone goes back to their bedrooms. Robert and Nancy slip into the hallway and kiss.