Hawk accepts her mother Max's help to prevent vengeful hybrids, amoral scientists, traitorous politicians, and a deadly virus from overwhelming her beloved, polluted city.

"A small southern town was evacuated after a freak power-plant accident. As the first anniversary of the mishap approaches, some residents are allowed to return past the national guard roadblocks. Mount Hope natives Maggie and Jordan quickly discover that their hometown is not as it was before. Downed cellular networks fail to resume service. Animals savagely attack humans. And the damaged power plant, where Jordan's father is an engineer, is under...

When Max and the Flock discover an unscrupulous scientist who is experimenting on humans in an effort to improve the human race, they decide that they must try to stop him, in spite of Angel's prediction about Fang dying.

Max, Fang, and Dylan, reeling over the disappearance of Angel, must embark on a final adventure that will lead them to the ultimate fight.