Young babysitter Amanda arrives at the Lloyd residence to spend the evening looking after their young son. Soon after the Lloyds leave, a series of frightening occurrences in the gloomy old house have Amanda's nerves on edge. The real terror begins, however, when the child's biological father appears after recently escaping from a nearby mental institution.

In 1830, forty years to the day since the last manifestation of their dreaded vampirism, the Karnstein heirs use the blood of an innocent to bring forth the evil that is the beautiful Mircalla - or as she was in 1710, Carmilla.@