Progenitor.

Vampires took over the surface of the earth aka Surface world. Using a large portion of the human population as fuel, they created a barrier covering the entire planet, blocking the sun from having any effect at all, thus rendering them virtually invincible. Keep human cattle farms with feed lots, for the purposes of feeding. ‘Free Humans’ have created underground civilizations of varying scale and power – larger underground metropolises even mimic the sky and clouds. With the intention of building up their strength in order to return to the surface, the Free Humans have been biding their time, forming alliances, sharing information, and fighting amongst themselves. On a routine cache expedition, a group of Scavengers find more than they bargained for, including a strange man who appears to be far more than he claims...