Based on a broken "Sixteen-Character Yin-Yang Feng Shui Secret", Hu Bayi and Fatty Wang were entrusted by someone to go to the Fuxian Lake in Yunnan to find an ancient tomb related to "gu" in legend. This ancient tomb is not an ordinary royal tomb, but originates from an ancient tribe that has long since disappeared - they lived with poisonous insects and relied on poisonous insects for a living. The pattern of its tomb coincides with the image of a "poisonous dragon locking the veins". Hu Bayi relied on his ancestral Feng Shui secrets to decipher the ripples in the mountains and search for the "Lord of Gu" lost deep in the earth. However, the tomb is not only guarded by a thousand-year-old poisonous poison, but also a shocking secret about "immortality" and "curse", leading them to an even weirder underground world. There, the mysterious veil of history is being unveiled layer by layer, and the trio will also face an unprecedented test of life and death...
