The film centers on Dracula's plot to convert Billy the Kid's fiancee, Betty Bentley, into his vampire wife. Dracula impersonates Bentley's uncle and schemes to make her his vampiric bride. Fortunately for Betty, a German immigrant couple come to work for her and warn Bentley that her "uncle" is a vampire. While Bentley does not believe them, their concerns confirm Billy's suspicions that something is not quite right with Betty's uncle.