Heiress Betty Balfour draws the ire of her father after using his
aeroplane to fly to meet her boyfriend, who is aboard an ocean liner headed to France. Betty's boyfriend becomes
seasick, so she must attend dinner alone, where she meets a mysterious man. She receives a telegram from her disapproving father, who warns that her boyfriend will not be admired by her friends. To prove her father wrong, she asks her boyfriend to marry her. However, he resents her control of their relationship, and they quarrel and part company. The boyfriend regrets the fight and locates Betty to apologise, but he finds her playing
chess with the mysterious man. The boyfriend and Betty quarrel again. Betty's father arrives and informs her that the family fortune from the
champagne business has been lost. When the boyfriend leaves after hearing the news, Betty's father believes it to be proof that the boyfriend is only interested in her money. In France, Betty is robbed of her jewellery and is penniless. She and her father take a small, dilapidated apartment. Her boyfriend again attempts to reconcile with her, but she rebukes him and vows to find a job. Betty finds work at an upmarket restaurant. The mysterious man appears and invites her to his table. When her boyfriend arrives, the man leaves after handing her a note advising her to call him if she ever needs help. The boyfriend disapproves of Betty's job and departs after Betty dances wildly in order to provoke him. The boyfriend soon returns with Betty's father, who is outraged about the lowly job and confesses that he had lied about the loss of their fortune in order to teach her a lesson. Angry with both men, she contacts the mysterious man, who offers to take her back to America. Betty accepts but is later horrified to discover that she has been locked in her cabin. She imagines the worst about the mysterious man's intentions and is relieved when her boyfriend arrives and releases her, and they soon reconcile. The boyfriend hides in the bathroom when they hear the mysterious man approaching. He enters with Betty's father, who confesses that he had hired the man to follow and protect her. The boyfriend is furious and, misunderstanding the situation, bursts from his hiding place to attack the man. Betty's father calms the boyfriend by telling him that he no longer disapproves of their wedding. The reunited couple begin to discuss the wedding but soon bicker over the arrangements. ==Cast==