Plot

Dracula kills victims. Dr. Seward tries to stop him. Dr. Frankenstein brings Dracula back to life, using his monster. Dracula and a female vampire terrorize the town. Seward is attacked by Frankenstein's monster.

Dracula kills another innocent victim and Dr. Seward decides it's time to wipe him off the face of the earth. Armed with a hammer and a wooden stake, he arrives at Castle Dracula and duly dispatches the vampire Count. Next day, however, Dr. Frankenstein arrives with his assistant, Morpho, and a large crate containing the monster. Using the blood of a pub singer who has been abducted by his creation, the doctor brings Dracula back to life and uses him for his own ends. The Count and a female vampire continue to terrorise the town, so Dr Seward once again sets out for Castle Dracula. Unfortunately, he is attacked by the Frankenstein monster and left for dead. Amira, a gypsy, rescues him and summons up a werewolf to do battle with the forces of evil...—A Franco fan

Doctor Jonathan Seward [Alberto Dalbés] runs the Halic Sewardis Klinik (Seward Sanitarium) while doing a little vampire hunting on the side. When he examines the body of a girl who has recently died, he notices the two telltale puncture wounds on her neck. Looks like Drácula [Howard Vernon] is on the prowl again, so Dr Seward pays a visit to Castle Drácula and runs a stake through the King Vampire's heart. Drácula turns into a bat and lays dead in his coffin. Not long afterwards, a deaf-mute wanders into town looking for Castle Drácula (hard to miss the huge castle at the top of a mountain just outside of town). The deaf-mute is Morpho [Luis Barboo], lab assistant to Doctor Ranier von Frankenstein [Dennis Price] who has also come to town with his monster and a grand plan to awaken Drácula and create an Army of Shadows that will serve him in his attempts to take over the world.

He begins by awakening his monster, whom he then sends on a task to kidnap a French cabaret singer [Josyane Gibert] so that he can use her blood to awaken Drácula, which he does by giving the bat a bath in the blood. Poof! Drácula is back, although he's more like a zombie now that he's a prisoner of Dr Frankenstein. Frankenstein orders Drácula to be fruitful and multiply and, so, leads him to his first victim--María, a flaky patient at Seward's sanitarium. When Seward notices the two puncture wounds on María's neck, he realizes that Drácula is at it again and heads back to the castle. On the way, however, he is met by the Frankenstein monster, who beats him up and leaves him for dead. Fortunately, Seward is found by a band of gypsies, who take him home so that Amira [Genevieve Deloir], apparently their resident witch and psychic, can care for him. Amira isn't feeling too good herself, having been recently bitten by one of Drácula's vampiresses. She knows that her time is short, but she explains to the doctor how the gypsies have been slaves to Drácula and they're tired of it. She knows that Seward tried to destroy Drácula once before and impresses upon him to try again and, in doing so, free her people. This time, she's going to help by conjuring up a werewolf during the next full moon.

At the next full moon, Seward is feeling much better, but Amira is worse. She has only enough strength left to remind him that the werewolf will come this night and that he must kill Drácula and the other evil things and so free the gypsies. Suddenly, the werewolf's howl can be heard coming from Castle Drácula. While the werewolf and the monster fight it out, Dr Frankenstein decides that Drácula has somehow betrayed him and plunges a spear through his heart. Seward gathers up the gypsies, and they all race up to the castle. The Frankenstein monster, bloodied from his fight with the werewolf, returns to his own coffin and is electrocuted by his creator. By the time Seward and the gypsies get there, both Drácula and Maria have been reduced to skeletons. Seward holds up a crucifix and thanks God for His divine help. [Original Synopsis by bj_kuehl]