On the basement level of the Municipal Archives, there is a Ninth Division that doesn't appear on the staffing roster. It takes in case files that can never be closed. Gu Zhilan is its only contract employee, earning 4,200 yuan a month. On his fifth day at work, he discovers a suicide case from thirty years ago. The ink on the page is bleeding through, adding a new ring each year like a countdown. Tonight, the fall described in the file is happening again at the exact same time. Whatever the case file says, reality follows; the case can only be closed once the truth is complete and the file has nothing left to say. But every stroke he writes on the page costs him a memory. The lost memories go into the archives. And the enemy can read them, too.