#1 The Memory of Earth: High above the planet Harmony, the Oversoul watches its task. Programmed so many millennia ago to guard the human settlement on this planet; to protect this fragile remnant of Earth from all threats. To protect them, most of all, from themselves. The Oversoul has done its job well. There is no war on Harmony. There are no weapons of mass destruction. There is no technology that could lead to weapons of war. By control of the data banks, and subtle interference in the very thoughts of the people, the artificial intelligence has fulfilled its mission. But now there is a problem. In orbit, the Oversoul realizes that it has lost access to some of its memory banks, and some of its power systems are failing. And on the planet, men are beginning to think about power, wealth, and conquest.

#3 The Ships of Earth: The Oversoul's chosen people flee the city of Basilica (destroyed in their wake by General Moozh) and travel across the desert wastes, eventually to settle in the hidden valley where long ago the exiles from Earth who founded the colony of Harmony left their starships--and the machines that can make them fly again. 

#4 Earthfall: The Oversoul of the colony planet Harmony selected the family of Wetchik to carry it back to long-lost Earth. Now grown to a tribe in the years of their journey to Harmony's hidden starport, they are ready at last to take a ship to the stars. But from the beginning there has been bitter dispute between Nafai and Elemak, Wetchick's youngest son and his oldest.

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