Above the planet Harmony, the computer Oversoul watches. But its systems are failing and the only hope of repair lies a thousand light-years away on the planet Earth, which was left behind forty million years ago...Nafai and his family have been chosen to make the great journey home, but most of them do so grudgingly. Their anger and hatred will make the trek across the desert wastes to the long-abandoned spaceport both harder and more deadly.THE CALL OF EARTH is the third volume in the epic Homecoming series, from one of science fiction's most powerful imaginative writers.