The story takes place in 1723, when vampires and humans coexist. As the king of vampires, Kagan (Ben Kingsley Ben Kingsley) drives out all human beings with his powerful strength and evil nature. those humans who have not yet become vampires' midday food can only hide in the city of sulfur like ants. Even in such a dark age, there are still warriors fighting bravely for freedom and light. They are a group called Hellfire. In order to gain more power, Kagan decides to look for the magic weapon left by his vampire ancestors, which also means that once Kagan succeeds, the end of mankind will really come, and in the legend, there is a mysterious woman named Lane (Christina Loken Kristanna Loken) who is the only one who knows how to get rid of Kagan.