The world we know...is gone. Nuclear war has destroyed civilized communities and decimated populations. Humanity has survived only in tiny pockets of an intricate cave system called The Underground. There's no light there. No color. No...joy. Is it really living without the hope of something better? According to most, there's no reason to venture beyond the safety of The Underground. Mutated monsters roam the surface and radiation wells make travel dangerous at best. Over a decade since the war ended and the new normal has settled around scraping by in the darkness. But Nathan Hock and four other survivors have been above ground for just over four years. Things have been far from easy but each has managed to survive. For Nathan, it's the search for survivors that drives him. Surely humanity has managed to find more than dank caves and mold. As his search continues and survival is a matter of more than just finding their next meal, a dark secret may be more than what any of them ever expected.