Libby (Ingrid Bergman) is the bored, middle-aged wife of NYC college professor Roger Meredith (Fritz Weaver). Going on sabbatical, he takes Libby to Tennessee's Smokey Mountains, where Roger intends to write a book. Upon arriving, Libby is instantly attracted to Will Cade (Anthony Quinn), a middle-aged farmer brimming with vitality. Despite their both being married, the two become passionate...