Vicky Lowndes (Jean Arthur) loses her first husband, Bill Cardew (Fred MacMurray), in a boating accident in which he is presumed drowned. The lonely widow is comforted by Bill's best friend and publishing business partner Henry Lowndes (Melvyn Douglas). Six months later, she marries him. Six months after that, Bill shows up, after having been stranded on a uninhabited island and then rescued. Vicky has a tough choice to make.