The fire in Xianyang Palace is gradually extinguished, Hangu Pass is broken, and the Qin Empire that once swept Liuhe is on the verge of collapse. The whole world is sighing that Qin Zuo will be destroyed. However, in the shadow of the collapse of the dynasty, a group of soldiers, alchemists and old ministers who swore the "hundred spirit of Qin" did not want to see the foundation created by the ancestor "Qin Shihuang" completely annihilated. They transformed themselves into ghost spirits using secret methods and formed the "Netherworld Guard".
They abandon the boundary between life and death and wander between the realms of Yin and Yang: they may create visions of "collapse of mountains and mausoleums" in the night camp of the rebellious army to frighten the coveted princes; or they may appear in the twilight of the setting sun to awaken the loyal and brave soldiers of the defeated Qin army with the majesty of the laws and regulations set by the "Qin Shi Huang"; they even set up formations in the depths of the netherworld, trying to use the power of ghosts and gods to restore the power of the Qin army and protect the remaining Qin people and worship in ancestral temples.
When the Qin flag in the world was about to fall, this group of "immortal" people in the underworld, with their souls as their armor and their obsession as their blades, composed a tragic war song about loyalty, obsession and immortal imperial power on the ruins of the dynasty - even if the empire was in ruins, the soul of Qin would still maintain the majestic power created by the "Emperor" in the underworld and the world.
