Desperately searching for the other Concentrators that are fatally disrupting Earth's orbit, Eleanor and her companions are labeled as terrorists by G.E.T. forces that would eliminate all but a few select people.

The Earth is in the grip of a new Ice Age, and when twelve-year-old Eleanor's scientist mother disappears in the Arctic, Eleanor sets off on a dangerous journey to find her--and uncovers a mystery, a crime, and evidence that Earth has been visited by extraterrestrials.

"Lug the cave boy must save his clan again--this time from a fast-moving glacier on course to crush the settlement"--

Manny, Sid, and Diego must fight to return home when the continents drift.