100 years ago an archaeological expedition accidentally discovered a secret place, but they all died because of the earthquake. 100 years later Ma Wenjun, a researcher of Manas culture, died mysteriously, and his daughter Ma Siyu learned that her father had a secret from the Western Regions before his death, and went to find it. At the same time, Qian Wanli, a fake rich man who coveted the secret, uses a scheme to lure former members of the Little Wilderness team to the Western Region.

Near Qishan Mountain, there is a little town called Fu Feng, which is nicknamed the "City That Never Turns Dark". There, lies a legend of the "Lit Lamp Murderer". Wen Ning arrives at Fu Feng, and he realizes the abnormality of the town; the whole town is filled only with the weak and sick; and is very run down. When the night arrives, Wen Ning purposefully lit up a lamp to attract ghost shadows. Just as he was about to capture them, a ray of blue sword light appears and the black shadow disappears. Wen Ning looks up, and sees his nephew, Lan Sizhui. Wen Ning and Lan Sizhui decides to work together and solve the mystery and capture the culprit behind the mysterious incidents.