Dreams of another civilization, medieval, appearing to come from an area called the Empty, impenetrable even for the most advanced features of this corner of the universe cash, are shared by all humans connected to the Gaia system, sort of shared empathy. A religion is organized around these visions, and its new leader, after the death of the creator prophet wants to launch a great pilgrimage to the source of dreams, what worries most of the galaxy, which fears a devastating expansion Empty.
For the four fifth of the trilogy, the story alternates between the stories in the Commonwealth universe intrigues between different factions of the advanced humanity threat of extraterrestrial intervention and return of individuals from the previous trilogy, and between stories worthy of fantasy, telling a story to the classic base of the young orphan out of his campaign to become the king of the corner (although there is no magician, groups of adventurers, or Lord Evil, it is more in the urban fantasy), and it is rather taking as history independent. The real source of the interest of this epic futuristic universe is revealed to the reader only at the end of the second volume. This is a trick that I like writing little, since all the characters are aware of them. But hey, let the author the right to keep his reader in ignorance.
The so-thirds of the work is fantasy, so the rest being a mixture of investigations, investigation, slice of life of the future and own epic Space Opera Hamilton. We find half a dozen of Pandora's characters, and a whole gallery of new individuals and entities. The mixture of the two stories is ... particularly but not uninteresting. Besides, somewhere, the intersection between the invasion by the Commonwealth Primiens and travel-quest Ozzie already took this structure, although the gender gap is much bigger here.
In the end, I found it a little less convincing than Pandora, but it is quality, and "Hamiltonian".