The Stone Age… We’re used to looking down on people who lived through that harsh and cruel time. We’re used to thinking of ourselves as the pinnacle of evolution, the only species on Earth worthy of proudly calling itself “Homo sapiens.” But what would happen to civilization if history went a different way, and Cro-Magnons couldn’t leave Africa to spread across Europe and Asia? To win the race with time and not disappear, you have to constantly expand the sphere of your vital interests. New technologies of the enemy require unique resources that can’t be found in the Black Sea steppes. Growing population demands new genetic lines of Neanderthals. And Lantirsk sends one expedition after another, changing the world around—and the very history of humanity…