After a Frontier village's monitoring station fails, deadly vampire Nobles return to life, swearing vengeance on the descendants of the family that defeated them three hundred years ago. The mayor of the village, hoping to save his life and that of his family, hires five vampire hunters, but as the mayor's daughter returns from the Capital, he finds that she has been targeted by five revenge driven Nobles! A chance encounter with D, may be the only thing that saves her. But D is on a mission of his own to find a truly ancient Noble, Grand Duke Drago and his moving 'Iron Castle,' and destroy him for his client, a mysterious man in an iron mask. In this brewing three-way battle of life and death, no one's survival is assured...