The youngest forensic doctor in Licheng, Qi Sizhe (played by Luo Yunxi), loses his girlfriend, Yu Fei, in a car accident. However, he soon uncovers a mysterious force behind the crash. Determined to find the truth, he joins the criminal investigation team in Hecheng, only to be caught in a series of bizarre, chilling cases. Victims long dead are wrapped in webs, and missing bodies appear preserved in formalin in the morgue. As he teams up with Zhu Qingyue (played by Liu Yase) and Han Feng (played by Jiang Qilin), they break case after case. And the truth behind Yu Fei's death and the "Original Diamond" drug case begins to surface…