That is a puzzling review, in that it's not really much of a review. More of a synopsis, with a single ambiguous sentence tacked on the end to sort of suggest an impression. Nothing about prose, plotting, characterization, all of which I'm sure are excellent. Peculiar.
On the plus side, the whole concept of the novel sounds so cool and intriguing that I'd buy it on that basis alone (though there are other reasons I'll buy it, too).