In the Early Morning, I Received a Work Order That Did Not Exist

At 2:17 in the morning, network security engineer Zhou Xu received a work order of the highest level: In a hospital building that had been demolished for three years, there was still a terminal online, and the contact person for the fault was actually his master who had been dead for three years. What's even weirder is that the online user displayed on the terminal is a girl that no one remembers, but calls herself his sister. When data begins to modify memory, and when the system can delete a person's existence, Zhou Xu must find out the truth before the countdown ends - this time it is not the network that needs to be repaired, but those people who have been forgotten by the world.