In 213 BC, what Qin Shihuang burned was not an ordinary book, but the "Leyline Map" which recorded the "Nine Netherworld Ruins". Two thousand years later, when the four ancient underworld artifacts (bronze box, corpse cauldron, dragon bone seal, and returning mirror) are reunited, the gate of Yinxu will swallow up the yang energy of the world. Five groups of forces compete in the undercurrent: the gold captain, the descendants of the tomb guards, the national special team, the legion of the living dead, and the overseas tomb robbing group.
