From the introduction:
Vampires. Nosferatu. Blood sucking creatures of the night. Since ancient times mankind has told stories of these creatures, from the blood sucking demons of ancient Babylon, to the modern broody teenage wet dream of western pulp fiction - a thousand and one tales with a thousand and one breeds of nightmarish creatures preying upon the innocent from the cover of darkness.
In this world you have a unique opportunity to encounter any or all of these creatures of the night, or to craft your own unique race of Vampire to inhabit a world of your own design, and even to become one of these monstrous creatures yourself.