Underneath the hustle and bustle of modern cities lies a forgotten and taboo past. A spiritual cave buried deep in the ground was accidentally exposed due to commercial development, resulting in the leakage of Yin Qi, triggering a series of strange and bizarre supernatural events: souls separated from the body, the undead resurrected, the awakened lost control, and the shadow of terror quickly spread throughout the city. Chu Yan, a young Chinese medicine practitioner, was originally just an ordinary doctor, but due to his ancestral bloodline, he was drawn into the whirlpool of the spiritual cave. He accidentally opened a bronze box that had been dusty for hundreds of years, and obtained the power of the "Spirit Purifier" inherited from the spiritual doctor. As his spiritual perception ability awakens, Chu Yan discovers that the spiritual cave is not only a sealing field for the undead, but also a key node connecting the Yin and Yang worlds. The price of awakening power is the gradual erosion of the soul. With the assistance of paranormal investigator Li Man, Chu Yan began to pursue the truth behind the spiritual cave, while facing layers of threats from out-of-control people to evil spirits. As the investigation deepened, they discovered that the division of the spiritual doctor family, the secret of the spiritual cave, the birth of the power of awakening, and even the entire reincarnation system were shrouded in a deeper conspiracy. Deep in the spiritual cave, Chu Yan will face the most difficult choice in his life: Should he choose to sacrifice himself, seal the evil spirits, and end this disaster? Or take the risk and allow the awakening power to be fully released, leading reincarnation to an unknown future? The redemption of the soul, the price of power, the awakening of forbidden arts, all mysteries point to the same question - can the Taoist taboo be broken?
