He was mortally ill. And not only he alone - his entire planet was shaken by social and natural disasters. But now, carried away by the hurricane of time and finding himself in a strange body and in a strange world, Paul realized with horror what his unknown descendants had to sacrifice for the sake of saving humanity. The inhabitants of the underground cities had no memory of the past, no goals for the future, no blue sky above their heads. All this remained on the mysterious Surface. But Pavel, a stranger from the distant 21st century, did not resign himself and began his long journey to the top...