The Regional Office and its band of super-powered female assassins protects the world from annihilation. But a prophecy suggests that someone from inside might bring about its downfall. And now the Regional Office is under attack Rose is a young assassin leading the assault, eager to stretch into her powers and prove herself on her first mission. Defending the Regional Office is Sarah – who may or may not have a mechanical arm – fiercely devoted to the organisation that took her in as a troubled young woman. On the day that the Office is attacked, Rose s and Sarah s stories will overlap, their lives will collide, and the world as we know it just might come to an end