Years after slaying ravenous vampire Count Mitterhaus, residents of a small European village are quarantined by plague, but their boredom is relieved by the arrival of a circus. Their joy turns to terror when the big top unleashes an ancient evil. Hoping to revive Count Mitterhaus and fulfill his dying curse upon the villagers, the vampires operating the circus wreak bloody vengeance until a schoolmaster uncovers their identities.