Athletic farmer's daughter Katie Higgins (Esther Williams) and her tightly knit family all love swimming. When traveling salesman Windy Weebe (Jack Carson) comes to the farm, he spots Katie's talent and encourages her to swim the English Channel. While training she meets a charming Frenchman, Andrea Lanet (Fernando Lamas), and has a dreamy dip with cartoons Tom and Jerry. In the end, her focus is torn between the swim and deciding between her two suitors, Lanet and Weebe.