Mistress of the dark Elvira hosts this campy Italian sexploitation flick that follows twin archaeologists (both played by Mark Damon) who battle vampires -- and each other -- in Countess Dracula's castle. Setting off on a quest for the magical ring of Nibelungen, the siblings find it in the possession of a Transylvanian noblewoman (Sara Bay, aka Rosalba Neri) with an affinity for virgin plasma. The supporting cast includes Esmeralda Barros.