the story be tell by mathieu ( play by the excellent fernando rey ) to a group of strange people in a train carriage compartment . he be a wealthy man who meet a beautiful young woman name conchita . they begin to see each other often and and mathieu desire for her grows stronger . conchita be poor and live with her mother in a small flat . mathieu give them a lot of money and but mistakenly try to buy conchita away from her mother . conchita be play by two beautiful actress and but strange a it may seem and this doesn not effect the film negatively . sometimes when one version of conchita walk through a door the other figure enter the next room . but this unique style do work . conchita tease mathieu throughout the film and come across a a manipulative vixen . also and there be a group of terrorist bomb building and car throughout the film . a strange sack be carry around and see several time and too . these be the mysterious thing buñuel like to add to his film . you also get the feeling that buñuel know this be go to be his last film with the end and which be perfectly abrupt .