Fourteen-year-old Aria Rowan never expected her peaceful countryside life to end with emergency broadcasts and rumors of a strange sickness spreading from New York City. But when the illness turns people into wandering, confused "Lost Ones," the world transforms overnight. With camps collapsing, supplies disappearing, and strangers growing desperate, Aria must protect her little brother Finn with every ounce of courage she has.Together they search for safety while learning the truth about the outbreak. They travel through forests, fields, and towns, discovering both kindness and danger among the last survivors. When a swarm of zombies overruns their camp, Aria and Finn are separated-forcing Aria into a journey across abandoned towns to save him.This is the story of a sister who refuses to give up, a brother who never loses hope, and a world learning how to survive its first days of darkness.