Nuh was a man trying to cage his restless spirit within the bars of an ordinary life until those ancient, handwritten pages found their way into his hands. What he discovered was not a treasure map but a lost index of humanity's forgotten sins. And those pages pull him deep, miles beneath civilization, into breathing forests untouched by sunlight, cavernous worlds ruled by colossal insects, and ultimately, to a civilization stolen out of time itself. How deep can the truth be buried? And with the doomsday clock ticking louder each second, how far will Nuh go to save humanity? Every second is a prophecy. Every breath may be the world's last. On the Brink of Doomsday is a breathtaking subterranean epic where adventure ends, science begins, and mythology reveals itself as a harrowing truth.