Vera, Katia, Ilona, Magda, and Erica, five showgirls stranded with their boss, Lucas, and their accompanist, Frank, in an area isolated by floods, take refuge in a mysterious-looking castle. Their host, Count Gabor Kernassy, is startled at the sight of Vera, who has the strange feeling of having been in the castle before. The Count tells her that she is the exact double of an ancestor of his. Although the seven guests are warned against leaving their rooms at night, Katia does and is later found dead. Soon after, the dead Katia, transformed into a vampire, attacks Lucas, but his cries attract help, and she vanishes. When Vera sees the Count lurking in the bushes, she notices that he looks strange, and it is discovered that he is not the Count, but his ancestor, a vampire. While exploring, Vera is attacked in an underground crypt by the vampire who, mistaking her for his long-lost love, places her in a tomb. When Katia jealously intervenes, she is disposed of. The Count rescues Vera by attacking the vampire and kills him by pulling aside the window curtains to allow the sunlight to strike him.