The story takes place in Linyuan City on the edge of "Kan Palace". The protagonist Shen Yueze is a time prisoner who was accidentally involved in the "Time River Fragments" and fell into a thirty-three-day cycle. Every cycle, he would witness his mentor activating the "Xuanming Ice Soul Curse" to seal the cracks with himself as a sacrifice in order to protect the people in the city, and he would eventually die. After countless futile attempts, the "black turtle" demon soul sleeping in Shen Yueze's body awakened due to frequent contact with the power of time, giving him a weak ability to influence the cycle. He got acquainted with Su Wan, a blind female harpist who possessed the "Broken Strings of Destiny" and could briefly pluck the strings of cause and effect, but suffered backlash; and Lu Mingyuan, a monk from the Kun Palace Natural Taoist Sect who believed in "governing by inaction". In order to break the cycle and save his mentor, Shen Yueze embarked on the road to find the legendary "Nine Nether Reincarnation Fruit" that can stabilize time and space, but was involved in a thousand-year game between the "Destiny Rewriter" and the "Time and Space Patroller". He gradually discovered that the death of his mentor was not an accident, but a sacrifice used to trigger a key "causal node" in a larger conspiracy. Shen Yueze must cultivate the demon soul and master the "Prajna Boat Crossing Technique" while finding a "third way" among countless intertwined prophecies and timelines that does not rely on forced intervention but can guide all things back to a harmonious order. In the end, he gave up on becoming an omniscient and omnipotent "demon emperor" who controlled everything. Instead, he used himself as the anchor, integrated the power of the Nine Palaces and Bagua, and established a "vortex of order" in the river of time that allowed mistakes and accidents to exist, and everything could evolve spontaneously. He became the eternal watcher. ",
