On a search for his missing friend Jonathan Harker (John Van Eyssen), vampire hunter Dr. Van Helsing (Peter Cushing) is led to Count Dracula's (Christopher Lee) castle. Upon arriving, Van Helsing finds an undead Harker in Dracula's crypt and discovers that the count's next target is Harker's ailing fiancée, Lucy Holmwood (Carol Marsh). With the help of her brother, Arthur (Michael Gough), Van Helsing struggles to protect Lucy and put an end to Count Dracula's parasitic reign of terror.