Under the steel and concrete of modern cities, there are countless dark corners that have been ignored. When night falls, delivery workers shuttle between dimly lit buildings. They are not only the "blood" of the city's operation, but also the "witnesses" who accidentally break through the cracks in reality. This work, through the perspective of deliveryman Wang Xiaoyu, presents seemingly absurd but horrifying urban legends, exploring "abnormalities in daily life" and "truths beyond reason."