In the year 12,090 AD, on a ruined world ruled by vampire nobles, the farm girl Doris Lang is bitten by Count Magnus Lee and hires a passing hunter to kill him before she turns. The hunter, known only as D, is a dhampir — half human, half vampire — who carries a wisecracking parasite in his left hand. D rides to the Count's castle to face Lee, his daughter Larmica, and the monsters the noble sends after Doris. This is a feature-length OVA based on Hideyuki Kikuchi's novel.