In the final years of the Qing dynasty and the early Republic, Chen Jiuchen, an heir to the Mojin Officers of Beiping, is forced back into tomb raiding to find his father, who vanished ten years ago. After a warlord in the Northwest blows open Kunlun's Dragonbone Valley and unearths chained dragon bones and a white jade box, a strange sandstorm swallows his soldiers, while undercurrents stir among the four great tomb-raiding schools. Chen forms an alliance with Shaji, the last tomb-guarding girl from Sha Liao Village, and discovers that the jade box contains the “Dragon-Suppressing Pact” made between King Mu of Zhou and the Queen Mother of the West. It can awaken the dragon vein, but it can also bring about the fall of the Central Plains. The two venture through a maze in the sea of sand and a sacrificial pit for a black tortoise, uncovering the truth behind an ancient pact in the Mirror Ruins. This gritty tomb-raiding adventure, centered on bloodlines, contracts, and the balance of heaven and earth, unfolds with heart-pounding suspense amid eerie folk customs and historical mysteries.