On the surface, Xue Danren (played by Li Sijie) is just an ordinary police officer, but in fact, he has a lot of attainments in metaphysics and uses it flexibly, thus solving many mysteries that give his colleagues a headache. With the help of his powerful friend Liang Xingqiu (played by Liang Liewei), Xue Danren has gained a good reputation in the industry and even attracted the attention of his boss Che Jifei (played by Wan Qiwen). Che Jifei was born to study criminal psychology and is used to being rational in dealing with things, which is very different from Xue Danren. However, an unexpected tacit understanding has developed between the two. The frequent serial disappearances in the city have caused the citizens to panic. The confusing case makes Che Jifei very confused. What she didn't expect is that this case is inextricably linked to Xue Dan's unknown past.