On the grand festival, a bizarre death case started, starting the journey to the mysterious underground palace to find the magical herb that can relieve the poison. All the itineraries are like a man-made adventure, and all the weird things are inseparable from the mysterious Miao village of "Qianhu". A strange experience caused earth-shaking changes in the originally peaceful village. Who is behind all this? Who has obtained the mysterious power? How many secrets are there that we don't know? Will we all die eventually?