In contemporary Los Angeles, a mysterious and charismatic Bulgarian vampire named Count Yorga has recently moved into an opulent mansion. He gains the trust of a group of friends after attending a séance held by Donna, whose mother has recently passed away under strange circumstances and with whom Yorga had been involved. During the séance, Yorga exhibits unusual power and insight, unsettling some of the attendees. However, the group largely dismisses their unease until one night after driving Yorga home, Paul and his girlfriend Erica are attacked, leaving Erica gravely ill and displaying symptoms of blood loss. This prompts Dr. Jim Hayes, a friend of the group, to begin investigating Yorga and the possibility that he is a vampire.

As Dr. Hayes delves deeper into the lore of vampirism, his suspicions about Yorga intensify. Despite skepticism from his friends, he tries to gather evidence to confront the Count and protect those at risk. The tension escalates as Yorga's influence over his victims grows, leading to increasingly perilous encounters for Jim and others in the group. As they inch closer to uncovering the full truth about Yorga’s malevolent nature, they are faced with life-threatening challenges and harrowing choices that could determine their survival against an ancient evil.