In 2070, the sun erupts, and humanity flees aboard arks to escape the catastrophe. Lin Yuan, a maintenance worker, is branded a useless cripple with no spiritual root and trapped in the bottom-level Zone D, where he awaits elimination by the resource-rationing system. Then, inside an old jade pendant, he uncovers the secret his mother buried: he was never without a spiritual root. He possesses a sealed, innate Daoist physique. Aboard an ark monopolized by cultivation families, Lin Yuan quietly establishes his foundation deep in the pipes. While the people on the top levels enjoy hibernation, the death-row prisoners below are preparing to take over this out-of-control ship.