Are there moving gears hidden under the skin of the missing people in Old Town? Former detective Lin Mo took over the Cousin Detective Agency and found that every case pointed to the human experiment in 1993. Policewoman Su Qing was accidentally infected with the gear virus. The pocket watch left by her grandfather turned out to be the key to the alien rules experimental site. When the gears swallow the moonlight, the entire city will become a sacrifice... And he must use reason and courage to find life outside the rules!
