Morning over dead world , under the flame of the artificial sun, lit by unknown Forever Ones. Among the strange statues, spread his shadow the black city of Sitrah. Its inhabitants do not remember who lit the man-made star and left on the planet living statues, whose task is to maintain a system of artificial worlds. All this was before their universe collapse in the termical death, and the planets turned into pieces of stone scattered across the vast blackness of space. Perhaps Sitrah themselves grown these cyclopical structures from formless biomass and reasonable nano-mechanisms. In those days, the forgotten and aeon-veiled times when the Forever Ones still ruled the universe and preparing for her death. They left, leaving Sitrah all managed to create. Technology to solve which nobody could even millions, perhaps billions of years, and in fact in the death universe not left space for time. Sitrah themselves become part of these machines. Their bodies are fused with black exosuits from chitin, nano- robots and morph-liquidium organic substance, similar to rubber. Exosuit gives them the opportunity to live in the worlds of the dead and live in a space devoid of air. They can take it only in their homes, where no deadly hostile environment.
They do not think about how long they will work machine is permanent and what will happen if they stop. Because the machine made by Forever Ones, apparently, is also eternal. They do not think about whether to return their ancient and unspeakable Lords who once enslaved all intelligent races of the universe and giving some of them a reward for thousands of centuries of slavery to live after the termical death of the entire space.
Them enough that they simply exist .
While that is enough ... ...
...for those who live eternally sooner or later themselves become to Forever Ones...

Name "Sitrah" taken from arameyan word "Sitra" - "Other side" or "Evil side"