The time has come for Max, Fang, Iggy, Nudge, Gasman, and Angel to face their ultimate enemy and, despite many obstacles, try to save the world from a sinister plan to re-engineer a select population into a scientifically superior master race.

After the mutant Erasers abduct the youngest member of their group, the "birdkids," who are the result of genetic experimentation, take off in pursuit and find themselves struggling to understand their own origins and purpose.

Heartbroken after her best friend and soul mate, Fang, leaves her flock, Maximum Ride begins to believe the evil scientists trying to convince her she needs to save the world, and that Dylan, the newest member of her flock, is her perfect mate.

Mori and her friends live a normal life on Firefly Lane in Old Harmonie, a utopian community where every kid knows he or she is genetically engineered to be better and smarter, but when a strangely perfect new girl named Ilana moves in, the friends begin to question the only world they have ever known.

In a future where genetic engineering has cured humanity of all diseases and defects but has also produced a virus that kills all females by age twenty and all males by the age twenty-five, teenaged Rhine escapes her forced marriage and journeys back to New York to find her twin brother.

"Seventeen-year-old Jimi Corcoran continues her fight for survival and equality in a near-future world where teenagers have animal DNA spliced into their own"--

"When Castor the street dog is captured, he learns there is a nefarious underground fighting ring in Lion's Head where animals are injected with DNA-changing serums, transformed into dangerous hybrids, and forced to battle one another to survive"-- Provided by publisher.

When millions of fish start dying off the coast of Hawaii and something is destroying hundreds of ships, the government enlists the Flock--a band of genetically modified children who can fly--to help get to the bottom of the disaster before it is too late.

In a world where everyone is the same, Trigger 17 convinces Dahlia 16 that she is unique but this proves that both are flawed, which could lead to dire consequences for their entire genomes.

Cat thought the Hydra epidemic was over, but when new cases arise, she must team up with an enemy to fix the vaccine before the virus spirals out of control.