In the bustling city, evil is undercurrent. A series of seemingly unrelated cases occurred one after another. The identities of the victims were different, but the committing methods were exactly the same, pointing to a mysterious organization hiding in the dark. Criminal investigation captain Su Muqing led her team in a battle of wits and courage with criminals. As the investigation deepened, Su Muqing gradually discovered that there was a deeper conspiracy hidden behind these cases, and her own past was inextricably linked to these cases. In the process of uncovering the truth, Su Muqing not only had to face threats from criminals, but also had to overcome her inner fears and struggles. In the end, can she defeat the darkness, protect justice, and find true redemption?
