"We don't know where they came from, what they are, or how much longer we have." In the spring of 2036, hordes of abominations sprung from the ground and drove humanity to the edge of extinction. The world governments that survived the initial assault pooled what resources they could into large strongholds that could hold off the hordes of the unspeakable. After 452 days of endless violence and a death toll of over 8 billion, the hordes finally halted. Humankind questioned their purchase, but they have not wasted it. After nearly two decades of relief, what remains of civilization is tentatively stable under the United Coalition. They hide in their strongholds at the end of the earth, fearing what walks the land that was once theirs. After the first appearance of these creatures, an event mankind would later refer to as "The First Breach," a small portion of the population started to be born with a genetic abnormality dubbed the Paradox Gene. Children identified as carrying this gene, are taken from their homes, and their lives are erased.  They are taken to a UCN black site to be moulded into an elite fighting force; the only hope of going toe to toe with the mind-bending horrors that stalk the wastelands on earth.