There are lights on the horizon. Electricity. Order. A return to civilisation.

After three years cut off, living by their wits in the bush, Finn and Kas might at last find a life without danger and threat. But the tracking device beneath Kas's skin begins to buzz - she can't ignore that she is a Siley, a slave, and will never be free. And when the search parties arrive, with brutal force, Finn and Kas face a new reality - a world divided by fences, a world where they can't be together.

But after everything they've been through, they're not about to play by the rules.