The City, a tiny metropolis of a few hundred sheltered citizens floating serenely on a deemingly random course a few feet above the ground, has long been thought safe from the predation of marauding monsters. It seems like a paradise.

A paradise shattered when an invasion of apparent vampires threatens the small haven. While the Vampire Hunter known only as "D" struggles to exterminate the scourge,a former denizen of the city, the attractive Lori Knight, and the brash John M Brasselli Pluto VIII seize control of the city, lurching it onto a new and deadly course. D's travails are just beginning.