In a world where humanity clings to survival beneath the Earth’s surface, the aftermath of the Hundred Year War has left cities in ruins and half the planet in the hands of terrifying mutants. Once, humans fought with all they had. Armies, technology, and weapons. Only to watch their defenses crumble as mutants evolved faster than they could be defeated. Now, the last remnants of civilization are fortified in underground strongholds known as Beehives, battling for every inch of ground against the mutants.

Aria Lock is one of humanity’s elite, a soldier trained to reclaim Earth one mission at a time. But when a critical mission leaves her tank mech, Combelt IV, immobilized, and her pilot, Elias, badly injured, she finds herself stranded in the desolate, mutant-infested ruins of a city.