Vampirella vs. Purgatori - Volumes 1-5 (Ray Fawkes)

For countless generations, the battle between good and evil has been fought, as much behind the scenes as in plain view. Unbeknownst to the world at large, one force has stood as a safeguard against the potential triumph of evil and the unleashing of the apocalypse: The 36. Now, someone is after them, a demon of evil known as Purgatori, and the only thing standing in her way is Vampirella.

With all of existence hanging in the balance, what could possibly bring these two enemies to join forces on the same side?