A quarrelsome couple discovers their marriage isn't legal.

When Ann Smith impulsively asks her husband David whether he would marry her if he had it to do over again and he answers no, the battling Smiths begin another skirmish. David then leaves for his law office and is visited by Harry Deever, who announces that the Smiths' three-year marriage is void because of a legal technicality that existed in Ann's home town, where they were married. Deever's next stop is the Smith apartment, where he informs Ann, whom he has known since childhood, that she is not legally married. When David calls to invite Ann to Mama Lucy's, their favorite haunt before marriage, she is sure that he plans to propose to her, but he fails to pop the question, and she throws him out of the house. To support herself, Ann takes a job as a clerk at a department store, but when David follows her there and causes a commotion, she is fired. After Ann proclaims that she no longer wishes to be married to David, David's law partner, Jeff Custer, decides to reconcile the couple and arranges to have dinner with Ann at her apartment that night. When David turns up unexpectedly, Ann decides to make him jealous and finagles a date with Jeff at the Florida Club the following night. Disappointed, David returns to his men's club, where Chuck Benson, another dispossessed husband, offers to introduce him to Gertie, a "high class girl." To make Ann jealous, David suggests going to the Florida Club, but when he meets the decidedly unclassy Gertie, he gives himself a nosebleed to escape his date. David's ploy backfires, however, and a jealous Ann suggests to Jeff that they spend the night at the World's Fair. When the pair get stuck on a ferris wheel in the rain, Ann takes the soaking wet Jeff to his apartment and prescribes a glass of liquour to ward off a cold. Following Ann's instructions, the teetotaling Jeff downs one glass after another until he becomes totally inebriated, but remains "a gentleman." The next day, David waits outside Ann's apartment in a taxi. Telling the driver that he is a private detective, David instructs him to follow Ann. When she goes to Jeff's office, David bursts in and finds Jeff's parents, Mr. and Mrs. Custer, fostering a romance between their son and Ann. Although David tries to shock them by revealing intimate details of Ann's life, Jeff insists upon bringing Ann to Lake Placid to become better acquainted with his parents. At the lake, Jeff and Ann are assigned rooms in a remote cabin, where they discover that David is their neighbor. When an inebriated David passes out in the snow and feigns delirium, Ann becomes concerned and Jeff begins to doubt her commitment to marry him. Upon discovering David's ruse, Ann angrily berates him, and in response, David professes his love for her but urges Ann to marry the more sedate Jeff. After dinner that night, Ann confides to Jeff that she plans to make David hate her so that he will start a new life. Alone in her room, Ann begins to yell so that David can hear her, pretending that Jeff is seducing her. Running into her room, David grabs Ann by the head, and when Jeff refuses to defend her honor, she becomes hysterical. At that moment, Jeff's parents enter the room and forbid him to marry Ann. After Ann walks out on Jeff, she and David battle their way to a reconciliation.