A nuclear war changed the planet forever. Years later, Earth is trapped beneath a seemingly endless nuclear winter. Temperatures have dropped to deadly levels, cities have disappeared beneath mountains of snow, radiation zones surround the ruins of civilization, and food, medicine, fuel, and clean water are becoming increasingly scarce.

Guest, a deaf survivor, has spent years surviving through careful observation, preparation, and resourcefulness. After losing her shelter during a catastrophic whiteout, she is forced into the frozen wilderness with limited supplies.

That's when she encounters Cade Sidon, a former military soldier traveling alone. Cade doesn't trust easily. He's experienced in wilderness survival, combat, navigation, first aid, and scavenging abandoned facilities but even his training isn't enough to survive the worsening winter indefinitely.

Neither of them expects to rely on the other.