After a short stay with an FBI agent who gives them a chance to attend school and live a normal life, the six genetically-altered, winged youths head toward Florida and Max's ultimate destiny--to save the world, whether she wants to or not.

After a concussion that effects her balance, memory, and other abilities, twelve-year-old Kat goes to I-Can, the "Miracle Clinic in the Swamp," where she joins forces with other patients to expose plot that endangers them all.

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.

Carbon dioxide is out of control on Earth, and the fate of humankind rests in the paws of four experimental, untested Animal Astronauts (AlphaWolf, SmartHawk, LaserShark, and StinkBug) who are seeking another habitable planet; first destination is the Plant Planet which at first looks perfect, except that the abundant plant life can think for itself--and it thinks that it really does not like the AstroNuts.