The thrill ride wasn't over when Max and her flock of winged kids flew off into the sunset at the end of Saving the World and Other Extreme Sports. Turns out retirement's kind of boring for the flock -- especially when the planet still needs to be saved and they're the only ones capable of doing it. With the help of a group of environmentalists (who just might be trustworthy) and the flock's evolving powers, Max could even tackle a problem as massive as global warming -- but a few things