A bumbling professor tracks vampires in the wilds of Eastern Europe.

Armed only with a case of crucifix stakes and a mallet, Professor Abronsius and his assistant, Alfred, arrive at a Transylvanian inn in the dead of winter to find and destroy the dreaded vampires who stalk the area. The villagers are reluctant to help, but the huge bunches of garlic hanging from every beam confirm the professor's suspicions that the town sports a resident vampire. Sarah, the innkeeper's daughter, is victimized by a vampire and abducted, but her parents refuse to help the professor track down the chief vampire. The couple pay for their uncooperativeness: the innkeeper, Yoine Shagal, is found one morning frozen stiff, with the telltale red fang marks over his arms and legs. Rebecca, Shagal's wife, cannot bring herself to save his soul by driving a stake through Shagal's heart. He is left to haunt the inn in lecherous pursuit of their maid. Alfred and Abronsius follow the crazed Shagal one night and arrive at the castle of Count von Krolock, who heads a tribe of vampires, including his homosexual son, Herbert. They find Sarah, but their efforts to save her are foiled by their own incompetence and Alfred's difficulty in discouraging the predatory and lecherous Herbert. The night of the vampires' ball arrives, but before Sarah can be presented, Abronsius and Alfred spirit her away and miraculously escape across the snowy mountains in a sleigh. As they seemingly drive to safety, however, Sarah shows her fangs and bites the enamored Alfred. The professor merrily propels the sleigh onward, unaware he is spreading the very evil he hoped to destroy.