On the surface, Lin An, a good-for-nothing deliveryman known to everyone in Yunjing City, runs around the streets full of neon lights and steam every day, enduring the glares and insults from others. No one knows that whenever night falls, he transforms into the legendary killer "Night Shadow" who makes the underground world fearful. An unexpected delivery mission involved him in a huge conspiracy that could subvert the world. A mysterious superpower chip called "Source Core" was implanted in his spine. From then on, he had to switch wildly between being complained for being late for delivering food and being destroyed when he saved the city. This is the story of a man who walks between light and darkness, how he disguises his weapons arsenal with a takeaway insulated box, uses an electric car to get rid of a supercar, and restarts his life amidst the rain of firewood, rice, oil, salt and bullets.
