Ree’hdworld is the only planet where humankind have found another form of intelligent life, though the Ree'hd are considered to be primitive curios rather than equals to technologically-advanced humanity. But, when a life-sapping disease known as the Fear (that's been wiping out human colonies across the Galaxy) reaches Earth, humans flee to Ree’hdworld in panic. Several humans already on that planet, on the verge of understanding the true nature of the Ree'hd and their supposedly primitive state, realise they have to do everything they can to stop an invasion by humankind.
I read this novel because I love Holdstock's Mythago Wood, and always meant to go back and read all his novels (the non-pseudonymous ones, anyway) from the start. This is his first. I have to say I found it mostly unengaging — perhaps because the lead characters are themselves somewhat remote. Robert Zeitman, a scientist, is rather arrogant and unsympathetically possessive of his ex-wife Kristina; Kristina's desire to become part of the alien Ree'hd, meanwhile, could have been the centre of a more interesting novel, but here left me wanting more; Maguire, the blind man with all the answers, comes across as more of an ageing hippie than someone with genuine, cosmic insight. But it does have a couple of sense-of-wonder moments towards the end, and when the ideas start to come together, it gets a lot more interesting. Still, mostly I was reminded of Robert Silverberg's Downward to the Earth, a better take on humankind discovering an advancement in consciousness through involvement in an apparently primitive alien lifecycle. I suspect that, as I make my way through Holdstock's early novels, I'll find more of interest in this book, for its being an early statement of Holdstock's themes and interests, and his evolution as a writer.