Thirty years have passed since the Great Catastrophe, for an unknown reason, destroyed the entire First Era of humanity, which colonized a new planet, the most distant of all human colonies in space, and happily existed for seventy years before its death. The only survivors on the planet are mutated microorganisms and synthetic creatures with artificial intelligence, who are trying with all their might to destroy the Second Era of humanity, which was revived in the Citadel shelter. Humanity's only hope for liberation from captivity is aviation reconnaissance groups, which are entrusted with the task of finding out the root cause of the Great Catastrophe and unraveling all the secrets of the planet.