Prof. Van Helsing is in danger of prosecution for the murder of Dracula...until a hypnotic woman steals the Count's body and cremates it. Bloodless corpses start appearing in London again, and Hungarian countess Marya Zaleska seeks the aid of Jeffrey Garth, psychiatrist, in freeing herself of a mysterious evil influence. The scene changes from foggy London back to that eerie road to the Borgo Pass... Carpathian Count Alucard is invited to the U.S. by a young "morbid" heiress (Katherine Caldwell). Her boyfriend (Frank Stanley) and local officials are suspicious of the newcomer, who is interested in the "virile" soil of the new world. Dracula arrives at Dr. Edelman's office asking for a cure to his vampirism. However, this is a ruse by Dracula to get near Dr. Edelman's beautiful female assistant and turn her into a vampire. Meanwhile, a sincere Lawrence Talbot, AKA the Wolfman, arrives seeking a cure for his lycanthropy. When Dr. Edelman's first attempt fails, Talbot tries to commit suicide by jumping off a cliff, but instead finds a network of underground caves where Frankensteins Monster is in stasis. Chaos ensues as the three monsters fight for dominance of each other.