This Yves Allegret film is set in French Polynesia and stars Edmond O'Brien, Richard Basehart, Andrea Parisy, Nicole Berger and Reg Lye. Basehart is the black sheep of a wealthy family of mining financiers based in France. He dumps the family life style and heads to Tahiti to make it on his own. His wife, Andrea Parisy, is less than amused with Basehart's choice.

Ron, a young man in his late teens or early 20s, but emotionally younger, has no visible, employable assets, yet rails at his status in life -- blaming everyone for the fact that his dreams are not coming true.

An eclectic group of characters set sail on Captain Lansen’s leaky cargo ship in an attempt to escape their various troubles. When a violent storm strikes, the ship is swept into the Sargasso Sea and the passengers find themselves trapped on an island populated by man-eating seaweed, giant crabs and Spanish conquistadors who believe it’s still the 16th century.

Steve McAllister, an Australian official for The New Guinea Administration, gets orders to investigate an oil discovery by Ned 'Shark-Eye' Kelly in the interior. He selects his native policeman, Sergeant-Major Towalaka, to accompany him on his "walk into hell" and then finds that a French lady doctor, Louise Dumurcet, is to go with them part of the journey. They find the malaria-stricken Jeff Clayton in a deserted village and he joins the trek. They are captured by jungle-natives but are released after Dr. Dumurcet cures the fever-stricken children of the chief.