
This is the second book of the Maximum Ride series, and Max is on the run. She runs away from the Institute, which is the place she went to find out about the parents, and killed Ari
(an Eraser). She rus away, but after a few days, a bunch of Erasers come chasing after her. It isn't unusual for the Erasers to chase her, but this time, they have wings, and their leader Ari - whom Max had killed - is back from the dead.
After the fight with the Erasers, the flock - Max, Fang, Iggy, Nudge, the Gasman, and Angel, head to Washington, where most of the flock's parents seems to be living in. However, Fang is hurt badly after the fight, and has to go to the hospital. Due to the fact that the flock has wings, the FBI come to research about them. Max makes a deal to go to an FBI agent (Anne)'s house and stay there and make the doctors cure Fang, and Max will give information.
The flock has peace in Anne's house, and they have to go to school, which they've never been to.
However, the school was actually a trip to capture the flock, so they had to leave urgently and head to Anne's house. There, Max finds a surprising fact that Anne was actually a leader of the School (the place where they made Max bird-kid and is trying to catch her).
As a result, the flock are on the run again, and this time to the company named Itex. This company is planning to destroy the world and it's Max's mission to stop them. On the other hand, the School had made a clone of Max, and replaces Max with the clone. The clone leads the flock into Itex, but Max manages to escape and the flock is rejoined. The flock is on the run....again.
This book is a great book, but I recommend that you read the first one first (Maximum Ride - The Angel Experiment). It's full of suspense and the action keeps on going from start to finish.