In the gripping conclusion of the Partials Sequence, Kira Walker stands at the crossroads of humanity's survival. The war between humans and Partials is inevitable, and both sides possess a weapon capable of destroying the other. With time slipping away, Kira, along with Samm and Marcus, must find a way to prevent mutual annihilation.

She holds one chance to save both species—but it will come at a great personal cost. Can Kira stop the impending doom, or will sacrifice be the only path to peace?