Bizarre murders occur one after another in Jiangcheng, and all clues point to a mysterious organization called "Shadow."
Forensic doctor Lin Yi and criminal police officer Gu Mingyuan were ordered to investigate, but found that they were already deeply involved in the situation.
Gu Mingyuan's past, Lin Yi's knot, Shadow's conspiracy...
When the truth emerges, can they find redemption in the darkness?
Concept: truth and lies
