While on a mission to Antarctica to save the world from global warming, fourteen-year-old Maximum Ride and the other members of the Flock--a band of genetically modified children who can fly--are pursued by their creator, the Uber-Director, who wants to auction them off to the highest bidder.

Stosh travels back to 1969 to try to prevent the untimely death of Roberto Clemente, a legendary baseball player and humanitarian, but upon his return to the present, he meets his own great-grandson who takes him into the future, and what he finds there is more shocking than anything he has encountered in his travels to the past.