In Russia in 1920, the most important problem was not the revolution, not the Civil War, or even the very rampant banditry. The main problem is evil spirits, which fuel human strife and fratricidal war. And this evil spirit seeks to destroy or at least enslave all of humanity! And the passage from Inferno to our world will greatly help with this, so that the last line of defense - the brothers of the Inquisitor Corps - is drowned in a wave of hellish creatures. After all, the inquisitors have been defending Russia for centuries! And it depends on only one person whether humanity will survive! Akim Poplavkov, a third-rank inquisitor of the Red Army, must find and put together the legendary Atlantean artifact - the Bone Star, which can close the hellish gates of Inferno.