At midnight, maintenance worker He Chuan discovered that the emergency exit sign in his home pointed straight at a solid wall.
The real door had been borrowed.
To get the exit back, he took a repair order that should not have existed and entered an old building where everyone had supposedly been evacuated. Yet someone inside was still waiting for him to open the door.
A residence where no one could open the door for another person, a hospital always missing one handover form, a train that stopped only at addresses from the past... Every anomaly had its own rules, and each repair could leave another person in reality with no way home.
He Chuan could only take his tools and work with others trapped there, investigating and testing possibilities as they tried to repair a way out before time ran out.
Then he found his own signature in an old file.
On the date beside it, he had not yet taken any of these work orders.
The person who had kept his signature safe was his mentor, missing for three years.
In ninety days, the old city would undergo its final transfer.
He had to find out: where had the people listed as "already departed" really gone?
