In the last years of the dynasty, evil spirits are rampant, immortals shun the world, and ordinary people are like grass and grass. Shen Qing, a widower in a small county town, lives with corpses every day and is disliked by others. One day, while examining a strange corpse that had been drained of its essence by evil spirits, he accidentally activated the [Netherworld Operation System]. As long as you examine the corpse, especially the corpse that died unexpectedly or is related to the "supernatural", you can sign in and get rewards, ranging from exercises, magic weapons to magical powers.
From then on, Shen Qing embarked on a unique path to becoming stronger. During the day, he was a cautious, post-mortem detective in the government. Relying on his forensic knowledge that was far ahead of his time and the ability to "open up the secluded world" given by the system, he repeatedly solved strange cases, from "water ghost seeking life" to "painted skin bride", step by step from the county to the state capital, and then to the capital, becoming the world-famous "magic catcher".
In the dark night, he is the messenger of the netherworld who walks in the shadows. He uses the power obtained from signing on the corpse to kill demons and capture the soul. He gradually discovered that the world was far more complicated than he imagined. Not all the high-ranking immortal cultivators were immortals, and not all the ghosts that everyone feared should be driven to pieces.
As his strength improves, he gets acquainted with Feng Wuyin, the mysterious leader of the Wangui Abyss, and becomes involved in the struggle for imperial power and the conspiracy of the Immortal Sect, and gradually uncovers a shocking secret - there is a flaw in the way of heaven, an imbalance between yin and yang, and the boundary between the human world and the underworld is collapsing. In the end, Shen Qing, as a mortal, relied on the power accumulated over a hundred years of signing in the system to take charge of the Netherworld, canonize the Yin God, reestablish the order of reincarnation, and become the only Netherworld Ghost Emperor recognized by the Three Realms and Six Paths.
