Jiangcheng's undercurrent surges, and a series of traceless murders follow one after another. The iron-blooded criminal investigation captain Lu Yan is decisive in killing, and he is burdened with the shadow of an old case; the airborne psychological profile consultant Shen Qingci is penetrating and has insight into the abyss of people's hearts. Two equally lonely strong men chase the murderer side by side in the mist of sin. In the confrontation of life and death, they form a restrained and hot bond. The abyss is your companion, the shadow of sin is your witness, and you are the only salvation.
Purpose: Redemption and solving the case