When forensic doctor Chen Xu was investigating a series of bizarre serial murders, he discovered that the deceased were marked with unexplainable crystal traces - "sin marks." He was forced to partner with detective Su Mu, but gradually discovered that he could empathize with the dying emotions of the deceased through the sin patterns.
As the investigation deepens, the "Law of Cause and Effect", an ancient organization with the mission of "purifying the world", emerges, and Chen Xu's first love Shen Xiang, who has been missing for many years, has actually become the "Judge", the ruthless executor of the organization.
What's even more frightening is that the dormant power in Chen Xu's own blood is awakening. He is not only the key "key" to solving the mystery, but also the most important sacrifice in this civilization purification ceremony that spans thousands of years.
When the coldness of order and the warmth of humanity swing at both ends of the scale, Chen Xu must make a choice: to become a god in the new world, or to protect the imperfect but real people in the old world.
