I died as a respected professor of anthropology, and woke up in the body of an unnamed youth in the middle of a tundra steppe, surrounded by cave hyenas. Around me is a harsh primitive world of the last Ice Age. And in my head— the entire future history of humanity: its breakthroughs, its dead ends.
But no matter what knowledge I possess, here spear and instinct rule. And if I’m to be heard, I must first earn a place by the fire. Only then will I be able to begin my real work: step by step, unnoticed by those around me, I will change the course of an entire species.