Su Xiao is an urban anecdotal investigator. Recently, she received a report: the sound of sewing machines can be heard from tailor shops in the old city at midnight, but no one has seen the shop owner. She pretended to be a customer and entered the store, and found that the mirror in the tailor shop was strange - the figures reflected were always half-shot, and in the corner of the mirror, there was always a figure of a woman wearing a cheongsam.
Su Xiao searched the old city archives and found that twenty years ago, the owner of this tailor shop suddenly disappeared while making cheongsam. The unfinished cheongsam was exactly the same as the woman in the mirror. That night, she quietly stayed in the tailor shop and saw the sewing machine running automatically, and the words "Save me" slowly appeared on the fabric. At this time, the mirror suddenly shattered, and a piece of cloth embroidered with the word "Su" fell out of it. Su Xiao's grandmother was the apprentice of the missing shop owner.
