Tang Yuebai, a crack-inspection disciple of the Gugenshan Sect, discovers during routine surveys that fine roots bypass strong spiritual energy to prioritize stable rock layers. Joined by recorder Xiao Qinghe, he uses crude tools to prove the roots' risk-aversion pattern. Facing a landslide crisis and standing up to high-ranking Bai Zhongting's skepticism, the two forge a layered root-support maintenance method from stone platform rescues to outer peak trials. When a catastrophic earthquake strikes, this marginal technique becomes the key force safeguarding the peaks and Lower Valley City.