Cargo shipowner Pat Fairlie (Ray Milland) loves Ena Dacey (Arlene Dahl), but her unconventional mother (Carroll McComas) and supercilious brother, Todd (Wendell Corey), don't approve of their relationship. Real estate developer William Montague (Patric Knowles) engages Pat to help prove that the Daceys are not the rightful owners of their sumptuous Jamaican coastal estate, which he claims actually belongs to his clients, siblings Janice (Laura Elliott) and Robert Clayton (Michael Moore).