A cataclysm strikes heaven and earth once every sixty million years. Each time, the myriad paths collapse, demonic forces run rampant, and living beings suffer untold misery. But why, during the cataclysm thirty million years ago, were all races and creatures subjected to a slaughter so unprecedented and devastating that they were nearly wiped out? And why, only thirty million years later, is heaven and earth changing once more, with another cataclysm about to begin? What does it all portend? And what connection does it have to the Son of Mending Heaven, the Son of Chaos, who was born around the same time? Mysteries abound, and shadows stir. Behind the bleak events lies the manipulation of an unseen hand; the truth behind the shifting situation is a clash of supreme powers. Where should he go from here? How long will heaven and earth remain in flux?