On the border of the Northern Wei Dynasty, there was an undercurrent of wind and snow in the six towns. Scout He Lantuo narrowly escaped death in an ice coffin in Luoshui River, and witnessed the strange Buddhist show of three hundred monks and soldiers arrayed in an iron coffin with corpses holding shovels. He discovered the account books of men in Huaishuo Town being sold for ordnance freight, which hid the truth about the collusion between the Ordnance Department and the Rouran Yuwen Department. During the ambush in Bailanggou and the iron coffin in Binghu Lake, he found the eucalyptus bow tire, the account book of "Ordnance Allocation for the Four Years of Taichang" and the fragments of the blood-stained star map, and pieced together the truth that the main beam of the ancestral temple was robbed and the man's flesh and blood forged a soft blade.
In the dungeon, Lu Shen used flesh and blood to draw beacon smoke, and the water vein diagrams and "can be slaughtered" marks that emerged from the corpses exposed all the lifeblood of the border defenses in the six towns. In the underground palace of Yongning Temple, Huijue used 700 human bones to forge Buddha bones and conspired to sacrifice them to the royal court of Rouran. He Lantuo activated the ancestral flood control gate, reversed the blood cycle, and involved the corpse puppets, monk soldiers, and Rouran vanguards in the whirlpool. The Baidaoxia canal gate teeth suddenly turned upside down when the severed palms and core components were restored. Wang Yanli's unicorn armor collapsed along with the canal monument, and the Buddha's bone relics and key gate teeth were exposed.
In the end, He Lantuo used the star map and military talisman to awaken the bronze gate of the underground palace, and the glazed Buddhist niche overturned Luoshui. Seven hundred "Buddha bones", gold cake inscriptions and ordnance remains were turned into powder in the torrent. The blood-soaked "Canal Worker's Dredging Book" and the broken hairpin in his arms bear witness to the bloody truth of how the bones of the men in the six towns were cast into soft tributes and turned into lamp oil before the Buddha. When Luoshui carried the debris and rushed eastward, new plowshares and green wheat seedlings rose from the scorched earth, as if announcing the new life after the injustice was over.