Plot: A double one. The Earth plot spans all four volumes of the tetralogy, so it is not complete at the end of each book. Its completion is the climax of the series. The alien thread comprises 4 separate accounts, one for each book. They mark the evolution of the world's inhabitants into transcendental beings.
2047 AD. Earth is finished. Through the Hesikastor, elderly leader of an esoteric sect based somewhere in Europe, come visions of a planet, Phrynis, and an alien human race - and the offer of safe harbor. The offer is followed by clips from the planet's past, beamed through the Hesikastor's mind. Are the aliens simply sharing this with potential heirs? Or warning them not to trash a second shot at survival? While the tales unfold, the race is on to get the means to find and reach that distant Eden.
Book 1, The Atheling, ended in chaos, viewed in 3D holographic stream through the Hesikastor's mind. At the same time, all hell breaks loose on Earth. Manfred Hengst, a ruthless and powerful magnate, takes control of any possible exodus to Phrynis. Communication is interrupted, and when resumed, a thousand years has elapsed.
In The Orborgon, focus has shifted far from Gurnyac, ancient seat of the Gnangar kings. King has become Emperor. Gar, Torc's brother, wreaked havoc across the Known World, and his legacy of greed, cruelty and hate has continued down the ages, bringing death and betrayal even in the highest places. At the peak of this Dark Age, a woman is born in a bleak and remote far western settlement called the Fend. For years, this scorder (healer), weaver, wise woman and scribe of that community, harbors a secret which will bring about her execution should the Fendfolk find it out. And this they do, at the onset of the winter that her grandchild is born and she is forced to flee with it - and thus begins the story of the orborgon.