Planet Yumei is a single state inhabited by four peoples: Eastern, Northern, Southern and Western. Their society is hierarchical, and those at the top have everything, including those at the bottom. On Yumei, everything is determined by energy, and the survival of a creature depends on energy development. The center of the plot: “closed box syndrome.” "The person perceives it as if he is locked in a box - in fact, in his own consciousness, which, figuratively it will be said, is trying to kill him. The lower ones with this syndrome are considered dead. But, if you want, you can try to get him out of there."