Lin Wu and Shen Ye, two names immersed in the dense fog that lingers all year round in Binhai City. As a student of the Folklore Department of City University, Lin Wu always sees strange black shadows when the fog rises. It wasn't until he met Shen Ye, an antique shop owner with Yin and Yang eyes, that he realized that he was the reincarnation of the "sacrifice in the fog" a hundred years ago.
Every midnight, the fog in the old city turns to blood. The cries of the missing are hidden in the fog. The chains on the abandoned pier shake automatically. Every strange thing points to the dusty sacrifice tragedy. Lin Wu's jade pendant can drive away low-level resentful spirits, and Shen Ye's bronze compass can locate strange objects in the fog. The two went from being suspicious of each other to jointly investigating the case, and pursued the truth in the fog step by step.
When the centenary sacrificial bell rang again, they found that they had long been involved in the vortex of revenge of the resentful spirits, and deep in the thick fog, there were more terrifying existences waiting...