This novel follows Di Renjie, an imperial censor of the Tang dynasty who wields the power of the “Five Virtues,” as he investigates disturbances in the grain transport system and becomes embroiled in a shocking conspiracy that threatens to overturn the human world. The story begins with the bizarre “Falling Star Plague” in Heishuiwa Village. Following the clues, Di Renjie discovers that the falling stars are no natural disaster, but a conduit for the extraterrestrial evil god “Lord of the Nine Nether Palaces” to project his power. At the Falling Star Altar on Wild Ghost Slope, he witnesses an evil array that sacrifices the living to transform them into stellar power. Though he fights to destroy it, he catches a fleeting glimpse of the terrifying being imprisoned in the abyss.
The investigation leads to Luoyang’s grain transport hub. Di Renjie fights for his life in the “Mechanical Heart Realm,” built by the master mechanist Shuijing, and exposes the tragedy behind his obsessive pursuit of absolute order after his elder brother’s murder, which ultimately drove him to join the Black Lotus Cult. Shuijing is silenced by the mastermind behind the scenes, foreshadowing an even greater darkness. Meanwhile, Wen Yuan, a leader of the upright scholars, risks his life to admonish the throne and awaken the court; Wang Yuanlu, an official in the Department of Revenue, agonizes between his conscience and his beloved son; and Chen Laoda, an old grain transporter struggling to make ends meet, senses the rising undercurrents. Through the perspectives of scholars, officials, and commoners, a vivid portrait of a world caught in conspiracy takes shape.
In the end, Di Renjie sees through the Black Lotus Cult’s plan to seize the new moon, distort the ley lines, and summon the true form of the Lord of the Nine Nether Palaces. The decisive battle will take place in the secret realm of Yunmeng Marsh. There, together with his companions, he must confront the apocalyptic threat from the dark sea of stars among the ruins of Yu the Great, and use the Way of the Five Virtues to protect the last balance of the human world. This is not merely a battle between good and evil, but a profound inquiry into the origins of order, the limits of power, and human nature.
