Detective Division

Chen Xuan's sister boarded the last bus that didn't exist and disappeared from the world. Surveillance showed that she got on the bus, but the bus company said that the bus was out of service that night. The only clue is her last text message: "Brother, I got on that bus and it had one extra stop." In order to find out the truth, Chen Xuan was transferred to the mysterious "Folk Culture Protection and Investigation and Research Department". Only here did he know the other side of the world: The ghost bus with one extra stop at midnight, the apartment in the mirror that goes back and forth, the psychological clinic that eats up memories, the reflection in the rain that walks upside down... Behind every extraordinary case, there are unknown rules and prices. And Chen Xuan himself is paying a terrible price—— Every time he comes into contact with a mystery, his "sense of presence" loses one point. Colleagues began to forget his name, photos of him in files became blurry, and even photos of his sister faded. Yanmu warned him: "If you continue to investigate, you will completely disappear from the world." Chen Xuan, however, held tightly to the copper coin found on the ghost bus: "If the price of finding her is to disappear, I accept it." Until he was deep in the mystery and saw the message left by his sister: "Brother, don't look for me... I will open the door." Behind that door is the ultimate secret that even the "abnormal" fears.