Jeff Dawson (Gary Cooper) is a hapless oil speculator in South America whose misadventures reunite him with an old friend, Ward 'Paco' Conway (Anthony Quinn). Unfortunately for Jeff, Paco's wife is bad-news, man-eating Marina (Barbara Stanwyck), the lover Jeff ran away from years ago, undoubtedly knowing that despite his lust for her, she was just no good. And now Jeff loves an...