In a future when only androids walk the surface, a small band of human survivors live underground in the Sanctuary of Souls where they protect the last remnants of their culture. For Cece, a nineteen year-old engineering prodigy, surviving isn't enough; she needs to grow, to reawaken the technological glory of her ancestors. But when it's discovered that she's building an android of her own to scout the uninhabitable surface, her complacent community...