Friends around him died mysteriously one by one, and even his beloved boyfriend was not spared. In just a few months, Ji Chen grew from an ignorant girl who didn't care about the world to a sane woman. What is supporting her step by step closer to that suffocating and terrifying fact? In the distant past, what kind of darkness was nurtured in the university that is admired by the world? Or, what kind of corruption and human horror existed in the motherland? Are love and friendship still the same in the fog of the dark night? In the end, is the most terrifying thing in this world ghosts, or the evil that cannot be driven out of human hearts? In this lonely empty city, who else can accompany me to the exit?