While walking her guard rounds in the country, Doris Lang, the orphaned daughter of a deceased werewolf hunter, is attacked and bitten by Count Magnus Lee, a 10,000-year-old, long-lost vampire lord (also known as a Noble) for trespassing in his domain.
Doris later encounters a mysterious vampire hunter, known only as D. Infected from Count Lee's bite, she hires D to kill the vampire and save her from becoming one.
