The neon lights of the city conceal the abyss. Bus No. 375 Carries ghosts and disappears into the fog, the face of a dead child flashes in an advertisement for the Guangzhou-Kowloon Railway, and a bloody murmur appears in the recording of an air crash—these concealed "coincidences" are all the daily life of 749 Bureau agents.
Psychic Lin Qi can hear the whispers of the dead, but during a certain mission, he learned from the soul that he was already dead; scientific research genius Su Yao used data to build a defense line, but found that all supernatural events pointed to the same set of strange symbols; operation captain Zhao Gang's bullets can penetrate entities, but cannot stop things crawling out of the mirror.
When the cracks connecting the "animal path" in the mountains of Yunnan widened, and when the lightning disaster in Lujiazui opened the dimensional gap, they finally realized that these events were a web, and the terrifying truth about reincarnation and dimensions was hidden in the center of the web.
Lin Qi's ability to lose control, Su Yao's prediction of "all annihilation", the black blood seeping from the barrel of Zhao Gang's gun... The world they guard may be just a cage. And outside the cage, something was knocking on the door.
