Subspecies (1991) follows three college students, Mara, Michelle, and Lillian, as they begin a study on Romanian culture and superstition in the small town Prejmer. They are befriended by Stefan, a student studying nocturnal animals. It is revealed that the nearby Castle Vladislas has been caught in a power struggle between vampire brothers Stefan and Radu. Centuries prior, King Vladislas was seduced and cursed by a sorceress who eventually gave birth to Radu. After banishing Radu's mother, the king met a mortal woman.