Book 3 of the Maximum Ride Series
In the third installment, Max is faced with the task of saving the world from the Itex corporation and the evil Director, who want to terminate all recombinant DNA life-forms and cut the population of the earth by half. The Erasers were some of the first to be destroyed and have been replaced by the new threat of Flyboys (robotic Erasers that can fly). Further issues arise when Max invites Ari--the single remaining Eraser--to join the group, leaving Fang and half of the flock to split off in protest, with Max the leader of one group, and Fang the leader of the second. And, with all this turmoil happening, Max finally finds out who her true parents are.