Two transsexuals are at the service of a scientist who has invented a gun that shoots erotic rays and that will be the solution to impotence and frigidity. The couple must protect it from robbery attempts by a gang of criminals.

Count Dracula's pregnant granddaughter arrives at his castle, along with her husband, who is not a vampire. While she prepares to give birth to a new member of the Dracula line, her husband secretly launches into a series of affairs with the Count's resident "brides."