A group of snobbish, well-appointed cosmopolitan types, including Letitia (Pinal), Alicia (Andere), and Leandro (Baviera), arrive for a post-opera dinner party in formal dress. When they retire to the drawing room after their feast, the guests realize the servants have vanished and come to believe they are trapped inside, prompting an absurd and savage pageant of survival of the fittest, where civility has no place.