Strange incidents of tourists comatose occurred one after another in the ancient town of Qingyan. The deceased all held old theater tickets from the Republic of China and fell into a sleep from which they could not wake up. Folklore reporter Lu Yin was ordered to make an unannounced investigation. On a rainy night, he saw a shadow on the stage and unexpectedly met Aya, a girl who knows Nuo skills. The two discovered that the strange thing originated from a Nuo opera martial artist who died tragically seventy years ago, and his obsession was sealed in the ferocious Nuo face. They dug up an ancient mask with bloodstains and burned it to resolve the crisis, but they didn't know that this had awakened the entire series of curses. Back in the city, more strange masks appeared one after another. The truth behind the death of the troupe, the mystery of Aya's father's disappearance, and the secrets hidden by Shen Mo emerged layer by layer. Lu Yin and Aya were forced to join forces to uncover a folk curse and human conspiracy that spanned decades in the bloody truth beneath the Nuo surface.