|summary=With a complicated weaving of multiple story strands this book can be an eye-raiser at times, but the whole result is an eye-opener to a very, very good storyteller.
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It's the future of at least a thousand years hence, and humanity is in trouble. The species has spread itself thinly out in the galaxy, but is under threat from a sentient virus, which is beating all efforts – military, scientific – to best it. The nearest thing to hope is in the unlikely form of a jungle flower, found only in realms sacred to the natives of one of humankind's planets. Elsewhere and elsewhen a shell-shocked WWI veteran is taken with his brother to South America, to gain the secrets and glories of the remotest Incan temples. It therefore sounds entirely unlikely that the main alien life scientist in the future and the earlier explorer will meet, but meet they do – and then things start to get weirder and weirder…