Qin Shuo, recognized by the entire school as a "bad student", slept in class, got into fights, and became fraternal with gangsters outside the school. No one knows that his true identity is a police undercover agent. School beauty Shen Qingning was the only one who saw the tiredness in his eyes - she didn't ask questions or pry, she just stayed with him quietly, choosing to believe when everyone else chose to stay away. Solving crimes, lurking, and living on the thin line of life and death, the young man walked alone in the darkness until he met the light that shone in silently.
