In Xiangxi's Wulong Mountain, rain has fallen without letup for three months. Deep in a secluded valley lies a flooded cave sealed off by vines. Ancient Chu script carved into its stone walls reads, “Dark waters mark the boundary. The dragon commands the nine springs. Enter, and you will either become an immortal or die.” But even that warning cannot stop the tomb raiders. Wu Xie, Third Uncle, and Fatty join A Che, a descendant of a shamaness, to search for a hidden treasure in the tomb of a Warring States alchemist. Together, they enter this place of deathly yin energy.
Pale frost drifts across ink-black water. Reliefs of human faces on serpent bodies adorn the cave walls, their gaze ensnaring the mind. Water fiends lurk beneath the surface, while corpse demons prowl nearby. Cursed tomb guardians stand at attention, swords in hand. Inside a crystal dragon coffin suspended in midair, the tomb's master lies in a gold-threaded jade burial suit, looking lifelike, with iron-dark nails. Using shadows to drain yang energy, the corpse seeks to shed its mortal body and become an immortal with the help of blood jade and an elixir of immortality.
A hidden mechanism lies within the blood jade dragon's eye, while a thousand-year-old conspiracy lurks beneath the dark waters. When the alchemical furnace shatters and the ancient tomb collapses, blue-black fingerprints remain, refusing to fade. The mystery of resurrection deep in the Qinling Mountains is already calling them onward. This time, they must face a curse of immortality more terrifying than corpse reanimation.