In this gripping, futuristic action novel, a Texan population has been attacked by a deadly virus and its only hope is to revive adolescents and turn them into merciless warriors. A 17-year old girl returns from death as a Reboot and is trained as an elite crime-fighting soldier. That is, until she is given an order she refuses to obey. Wren Connolly is known as one of the deadliest Reboots around, so is the one to train Callum, a 22-year old with a hopeful smile that works its way past her defense. When Wren is ordered to eliminate him, her only choice is to risk everything to save him.