Stubborn Emily Delmar sneaks out of the house to go to a nightclub, and when she discovers that she has left her house keys at home, decides to spend the evening at the apartment of Richard Trotter, a young man who is pursuing her. Trotter comes home to find her there, and proceeds to take her to the house of her Aunt Geraldine. On the way there they stop at a beachfront hotel for dinner, and Emily, not ready to go to her aunt's house just yet, hatches a scheme to stay overnight and have a swim. Unfortunately, her Aunt Geraldine and Herbert Threadgold, a rival for Emily's affections, arrive at the hotel, see Richard and Emily there and assume "the worst". Complications ensue.