Earth has been invaded by aliens. Human civilization was destroyed, but the invading race of Grrahs allowed people to live on the planet as animals. Sashka, nicknamed Barefoot, was born after the invasion. He did not see his previous life, did not know what it was like to consider himself the king of nature and the crown of evolution. In his life, everything is simple and clear: work, obey your mother, avoid older boys and run away headlong as soon as you see the grah. But one day his life turns upside down, and Barefoot, without realizing it, embarks on a path of development that has no limits. From the author: This will be a cycle. The second book is currently being written.