Frank, a vet, discovers that his daughter Anne has a lesbian relationship which is hard for him to accept. He decides to drive to the theater to talk to his daughter who is performing a play named 'The Flemish Vampire'. Before he can confront her, in a theater in Flanders, during a play about demons, angels and vampires, a legendary evil demon will awaken after 500 years of dwelling. On this stage the ultimate battle will settle