"Time Flow" is a ceramics shop that sells various exquisite ceramics from the Tang Dynasty to modern times. But the owner and the clerk of the store are not ordinary people. The mailbox behind the door contains various "commissions". They accept the commission to transport the ghosts and monsters that do not belong to the human world back to the underworld and also deal with the affairs of the mountain spirits and wild monsters. Trouble comes time after time. It seems that the identity of the shop owner is not as simple as a civil servant in the underworld. The finger points at "him" inside the body. The evil ghost below the 18th floor is ready to move. Is something big going to happen? Why was the position of Ksitigarbha passed to him? Or... Is this just a conspiracy against him?