Synopsis for
Caged Virgins (1973) More at IMDbPro »Vierges et vampires (original title)

Two pubescent, pig-tailed, virgin schoolgirls, Michelle [Mirielle d'Argent] and Marie [Marie Pierre Castel], run away from their school and find themselves lost in a cemetery which leads to a chateau inhabited by vampires and naked women in chains. The girls try to escape, but they are bitten by the vampires' aging Master. The Master decides to initiate the girls in order to make them perpetrators of the vampire race (which is about to die out). Eventually, of course, the girls will have to be deflowered because 'you cannot be both virgin and vampire.' For now, however, their job will be to hunt by day and lure victims back to the chateau for the vampires to feed upon. Michelle brings back a victim, but Marie takes pity on hers (Frédéric [Philippe Gasté]), begs him to be the one to deflower her, and then sets him free.

Tonight is to be the grand initiation. First goes Michelle. Then it's Marie's turn. When the Master discovers that Marie is no longer a virgin, the vampires set out to search the chateau for her defiler. Frederick takes refuge in the Master's mausoleum. Then the Master takes Marie for a walk and tells her a secret. He is the last vampire, and there will be no more. Only Erica [Dominique Toussaint] has the chance to complete the change. The others will change slightly over time, but they will never be full vampires. He then sets Marie free and returns to his mausoleum.

The next morning, Michelle confronts Marie and tells her that she must reveal where Frédéric is hiding or they will both be killed. Marie refuses, so Michelle chains her and spends the day whipping her, kissing her, and apologizing for hurting her. But Marie refuses to talk. When Erica threatens to poke out Marie's eye, Michelle helps Marie to escape. Of course, Marie leads everyone directly to the mausoleum where Frédéric is hiding. A gunfight ensues. All the vampires are killed except for the Master, Erica, and Louise. The Master tells Louise to seal him and Erica in the tomb and never let them out again. After their deaths, there will be no more vampires. [Original Synopsis by bj_kuehl.]