In the darkest corners of lower Manhattan, a battle like no other rages. The city is home to a hidden group of survivors of the nanite plague, and a brother and sister born to defend their race. With a touch that can destroy nanites, Lanni, sister of Alex, is their last chance. Can she save her brother? Can she protect mankind's only hope? Or will she be responsible for the destruction of the last humans on earth? It's going to be another long day...