After a nuclear outbreak turned the surface world into a wasteland crawling with infected known as the Hollowed, the last survivors of humanity hid underground.When his little sister Mira is kidnapped by raiders, Riven joins the Vanguard Unit — a small group of survivors sent above to scavenge and fight.But what begins as a rescue mission soon becomes something far greater: a desperate fight to save not just Mira, but the last light of humanity itself.Through blood, sacrifice, and the ghosts of a broken world, Riven discovers the truth behind the infection — and the cost of saving the world.In a land where everything has died, will hope survive?