While searching the countryside for the grave of supposed vampire Countess Wandesa Dárvula de Nadasdy (Barbara Capell), students Genevieve (Andres Resino) and Elvira (Gaby Fuchs) meet an amiable local named Daninsky (Paul Naschy) who offers to help them look. Not knowing he's a werewolf, they accept, and Daninsky leads them to the tomb where they accidentally revive the sleeping vampire. She attacks, and Daninsky and Elvira cooperate in trying to stop her -- falling in love in the process.