One hundred thousand years ago, the immortal world was in chaos, the gods fell, and a hidden mystery, the "Book of Life and Death," descended into the world. Young archaeologist Lu Yun accidentally broke into an unidentifiable burial chamber during a scientific expedition. Consequently, his peaceful life was shattered, and he embarked on a thrilling journey to uncover various mysteries. Dragged into the Immortal Realm by the Book of Heaven, Lu Yun took charge of Xuanzhou City as the Langxie Tian Xuanzhou Prefecture Shepherd. Upon arriving in the Immortal Realm, he faced his first challenge. With his term of office nearing its end and the major families of Xuanzhou eyeing the position of prefectural shepherd, Lu Yun, who could not cultivate, sneaked into the Xuanchi Mountain tomb with his female envoy to find the Jiuqiao Jindan, which could change his physique. To avoid the enemy's plot, Lu Yun and the female envoy infiltrated the depths of the tomb. Chased by a thousand-year-old corpse monster, swarms of corpse flies, and the strange Shi Ling queen, they accidentally hid in a woman's boudoir filled with a dark fragrance. With the power of the Book of Life and Death within him, Lu Yun discovered that the woman in the portrait was Dan Xian Yuying, the last Xuanzhou prefectural shepherd and the first messenger of reincarnation recorded in the Book of Heaven. Through Danxian's recuperation, Lu Yun successfully changed his physique and temporarily retained his identity through negotiation with Emperor Langxie, believing the matter was resolved. Every night in his dreams, Lu Yun sees fragments that do not belong to his own memory. Once inside Lu Yun's room, he observed the heavenly book in the sleeping Lu Yun's body vibrating wildly, accompanied by the strange scene of nine dragons carrying coffins around him. To solve the mystery of the Book of Heaven, Lu Yun went to Xuanshui City, adjacent to the Xuanhe River, to uncover the truth according to the book. A young child hid in a dark room, and a swaddled baby was placed in a wooden box covered with thick cotton. To save the child, Lu Yun had to dive into the Xuanhe River to investigate. The devastated Xuanhe Water Palace had long been occupied by Gandalf monsters hidden in the darkness. Before Lu Yun and his companions could escape the shocking group of monsters, they were attacked by the demonized Xuanhe River God. To save their companion Qinghan, Lu Yun used the Floating Life Map as a weapon, forcing out the power to manipulate the Book of Life and Death within him to conquer the River God and obtain a new skill. Thus, Lu Yun conquered the fourth messenger of reincarnation; each messenger represents the strongest in different aspects such as Talisman Dao, Martial Dao, Formation, and Refining. Lu Yun is approaching the truth of the scripture step by step, even if he becomes an enemy of heaven and earth, with the world at his side. At this time, the curse king sitting on the Jiuzhongtian looked at Lu Yun and smiled: "Hmph, the ants who are beyond their own power..."