The inhabitants of this world called it Sheol—meaning both an underground kingdom and an unknown space, and simply a grave. What else could you call the gloomy dungeons where no ray of sunlight ever entered, and where people who survived a global catastrophe were locked away for many years? But man adapts to everything—and a living example of that is Kuzma, nicknamed Indikoplav. He navigated the catacombs perfectly and even managed to train a pack of bats, turning them into guides and assistants. It is to him that the leaders of warring factions of Sheol turn when they decide to undertake an expedition to the surface.