"Bloody" Mary, a vampire with a death wish, has spent the past 400 years chasing down a modern-day exorcist named Maria who is thought to have inherited "The Blood of Maria" and is the only one who can kill Mary. To Mary's dismay, Maria doesn't know how to kill vampires. Desperate to die, Mary agrees to become Maria's bodyguard until Maria can find a way to kill him.

"Mary" finally appears before Maria, who can't bring himself to ask about what happened on the night his father died. While Maria is unable to face the truth, "Mary" offers him a deal: if Maria can get Mary to recall the forgotten memories of Mary's past, "Mary" will reveal what happened the night his father died. Meanwhile, Hydra, who has also come to England, has a reunion with the skeleton of "Mary" in an old castle...