Summary may contain [SPOILERS]

This is a life-or-death exam. True questions, live through by passing. A cunning invigilator [Qin jiu] encounters a examinee [You huo], two people with amnesia, in the narrow space between an inhumane system, with swords drawn and arrows aimed, yet they are incredibly attuned to each other. Repeated alarms, repeated system crashes, as their lost memories gradually become clear, it turns out that at the end of a world shrouded in smoke, we are still the same people we first met. What does the system matter, just kill each other. The world is thriving, welcome home.