Professor Ambronsius (Jack MacGowran), an eccentric old academic, and his bumbling assistant, Alfred (Roman Polanski, who also directs), travel to a Transylvanian town that's been plagued by a clan of local vampires. After innkeeper Shagal's beautiful daughter, Sarah (Sharon Tate), is abducted by Count Von Krolock (Ferdy Mayne), Ambronsius and Alfred penetrate the count's castle to kill the bloodsuckers. Hilarious tongue-in-cheek satire.