In 2025 AD, Xuan Xiao, a young man from a fishing village in the South China Sea, rescued the dying Deep Sea Demon King on a typhoon night and accidentally awakened the Chaos Spirit Pearl that had been sleeping for three hundred years. The blood of the Demon King flowing in his body resonated with the remnant soul of the spirit bead, and the crescent moon birthmark on his palm became the key to connect the three worlds. When the scientific research ship disappeared collectively in the strange sea area, and drones photographed the ruins of the ancient Dragon Palace emerging from the bottom of the sea, Xuan Xiao discovered that the so-called "natural disaster" was actually the "Guixu Observation Station" launched by the heaven - a modern alchemy furnace that uses human technology to raise monsters and extract spiritual energy to refine the Nine-Turn Golden Pill.
During the practice of monkey hair incarnation, Xuan Xiao gradually uncovered the shocking conspiracy of Taixu God Realm: the so-called ascension is just a captive game of higher civilization, and the so-called fairy world is just an eternal cage to harvest luck. When he led the demon clan to tear open the seal of Nantianmen, he witnessed an even more terrifying truth when he set foot in the Taixu God Realm - all breakthroughrs, including himself, were just "variables" used by higher-dimensional civilizations to break through the law of cause and effect.
With his left hand wrapped around the chain that suppressed the demon god, and his right hand holding the god-killing blade left by the Demon Emperor, Xuan Xiao must make a choice between destroying the Taixu God Realm and preserving the human race. In the end, he used the Chaos Spirit Orb to reverse the dimensional laws and turned his soul into a cage to lock the void rift. When the morning light shines on the South China Sea again, the fishermen find a stone tablet with an ancient motto on the beach: "The observer is the prisoner, and the one who breaks the situation will eventually become the inscription."
