In the night shift at Donglan Port in the Dragon Kingdom, a container declared as "waste stone sculpture" was scanned and found to contain an ancient Guancheng. After unpacking the box, wind and snow poured into the pier. A gatekeeper who had been stationed for a hundred years handed the incomplete seal to Liang Su: "We have guarded the Dragon Kingdom for an additional 137 years, and the rest of the journey is left to you." From then on, Liang Su joined the Ninth Inspection Section, investigating ghost ships, breaking up ghost stories, sealing strange areas, and suppressing false gods. Anyone who crosses the country abnormally must declare their true name, origin, purpose and value; those who make false declarations will be detained. As the seal continued to be completed, he grew from an ordinary tallyman to a seal holder of the Dragon Kingdom, but he also discovered that his father's disappearance twelve years ago was related to the White Cabin Society who tried to erase all countries, hometowns and histories. When thousands of treacherous doors open at the same time, what he has to guard is not only a barrier, but also the lights of thousands of families behind him.
