The elevator description of this novel would be "Deep Impact" meets "The Stand" and they have a baby. This baby, like all babies, is smaller than its parents: just a few individuals in scattered lives, that draw together in the usual human ways. Though we soon see that these are not usual humans. While the message of the book could be "species which do not adapt do not survive," the book doesn't dwell on its Darwinian roots, but celebrates the human capacity to create connections, families, communities in spite of it all.