Stone Age... We are used to looking down on people who lived in this difficult and cruel time. We are accustomed to considering ourselves the pinnacle of evolution, the only species on Earth that deserves the right to proudly be called “Homo sapiens.” And what will happen to civilization if history takes a different path, and the Cro-Magnons are not able to leave Africa for the vastness of Europe and Asia? The consciousness of our contemporaries is transferred tens of thousands of years into the past, into the body of a Neanderthal teenager. The initial desire to simply survive soon develops into another - to save this species of people from extinction. And Dim begins to act...