In the small village of Kleinshloss, the locals are scared with a serial killer that is draining the blood of his victims, and the Burgomaster Gustave Schoen is convinced that a vampire is responsible for the deaths. The skeptical police inspector Karl Brettschneider is reluctant to accept the existence of vampires, but the local doctor Otto Von Newman shows literature about cases of vampirism inclusive in Amazon. When the apple street vendor Martha Mueller is murdered, the prime suspect becomes the slow Herman Gleib, a man with a mind of child that loves bats. The group of vigilantes chases Herman, while Dr. Von Newman's housemaid Georgiana is attacked by the killer... (from IMDb)