It happens that an unsaid word, an undone deed affects the future much more tragically than mistakes made. Thus, the unfinished operation on Mars to destroy the chronogen led to the emergence of a dead end in the development of mankind. A little more, and the earthly Regulum will become obsolete, which means it will be destroyed. The culprit of the incident, who by that time had become the Commissioner of Balance, Stanislav Panov, decides to return to the past, find a copy of “himself” and, having transferred the necessary knowledge to this Stas, persuade him to help complete the matter. However, the mission is complicated by the fact that now too influential forces are interested in preventing humanity from veering off the road into the abyss...