Li Tiezhu, the unlucky guy from Shantun Village, picked up a piece of underworld password in a mass grave and was forced to start a career in the "Yin Yang Hall" - from then on, the ordinary farmhouse became a gathering place for immortals. The chicken essence red crown loves to fight against injustice, the old rabbit fairy protects the weak, the yellow-skinned thief turns into a treasure hunter, the black snake fairy protects him coldly, and even the soul of the ancient tomb general comes to seek refuge!
During the day, he kills water ghosts and breaks barriers, and at night, he chats with the immortal family and runs errands for the underworld. Li Tiezhu's life is both scary and funny: he is commanded by the chicken spirit to "add millet to the immortal", the rabbit fairy complains about "working hard and whining", and he has to take his honest fishing friend Erzhu to break into ancient tombs and investigate unjust cases. The bigger the hall becomes, the more bizarre the troubles become - the mysterious changes in the mass graves, suspected cases of collaboration with the enemy hundreds of years ago, and weird things that even the underworld can't control come one after another.
When the fairies from Northeast China work together, the mortal hall master joins hands with his partners to investigate the case across borders. The thriller and suspense are mixed with hilarious contrasts, and the imaginative yin and yang linkage makes this "from the hall to the underworld" adventure getting more and more exciting as it goes on!
