"Lunar Travel Agency" undertakes all "underworld" business!
Zhou Xuanqing (grandfather of the protagonist), the first generation rule breaker, established a Lunar Travel Agency in a special era to suppress the "Huangquan Well" (which was the result of the resentment of the people) and turned the weirdness into a manageable "tourism project". However, he became a semi-regular body because he stole the lifespan in the well to save his wife.
Zhou Xun takes over this hot potato and is forced to lead strange tourists to strange attractions on taboo days in the lunar calendar. Each tour triggers a different rule system.
