Folklore reporter Shen Hanzhou stepped into Wujiang Town, which is shrouded in thick fog all year round because of a mysterious disappearance case. The white walls and black tiles here hide something strange, the river is so deep that it can swallow people, and the townspeople keep it secret. At night, there are unknown sounds and shadows wandering in the fog. Su Wanyue, the proprietress of Tingyu Pavilion, is gentle and distant. Her missing husband, the strange scars on the wrists of the townspeople, the remnants of the water-controlling monument under the old dock, and the strange songs sung by the watchmen all point to the dusty secrets of the ancient town.
