A party of yachting jet-setters visit French Saigon, where they meet lovely Manon deVargnes, a second-class citizen not allowed to leave the country due to her part-Oriental ancestry. When the others leave, playboy Bill Carey stays behind to woo Manon; but all his efforts to get her out of the country with him run into a brick wall. And Pierre Delaroch, her wealthy former admir…