150 years ago the world ended. Bombs fell, winter came, and the survivors fled underground in search of safety. Now they struggle to preserve what's left -- sleeping by day, and battling fearsome vampiric fly-by-nights after sunset.Resources are scarce and security is scarcer in this fallout-poisoned world, but one subterranean clan of hardy souls clings to life, scavenging and scraping by until their water supply goes catastrophically bad. Forced to seek a new life above, they leave their long-time home to caravan across the stricken planet's surface, where the light is toxic and the night hides unspeakable monsters.It is a difficult existence without promise or direction, until word from a band of fellow refugees fizzes through the choppy radio static.