At the end of the Dharma era when the spiritual energy is exhausted and the miraculous traces disappear, practitioners hide in the city, like fish diving into the abyss. Chen Qian, an ordinary young man struggling to make ends meet, accidentally got a rusty ancient bronze mirror at a second-hand bookstall. When the mirror shines on his body, it reveals a strange phenomenon - only the cold words he can see pronounce his fate of being "a rotten tree, with the road to immortality cut off".
In front of the keyboard, he mocked himself and typed out the response of "Rotten wood can be carved." Three days later, people in the city died mysteriously one after another. The only clues were that they had spoken rudely to this ancient mirror. A mysterious visitor in a suit knocks on the door, bringing a warning that subverts cognition: the end of the world is not the end, and there is a terrifying secret path back to the prehistoric world hidden under the city. That unintentional rebuttal had already caused him to be killed, and it had also opened the door to the sky for him to open the thin line between life and death, change his fate against the will of heaven, and crush the sky.