This list is trying to be as spoilerfree as possible, but the Guardian drama does not consist of independent episodes but describes one continuous plot arc. The farther the plot progresses, the more even short summaries will give away plot points.
Guo Changcheng starts his first day of work at the SID, the "Special Investigations Department", led by Zhao Yunlan.
When a female student is mysteriously killed on the campus of the University of Dragon City, they go to investigate the scene of the murder.
There they meet Professor Shen Wei, who admits that the murdered girl was one of his students.
The case involving Li Qian grows more complicated, as does the mystery surrounding Shen Wei. Zhao Yunlan summons the Black Cloaked Envoy to talk about the sudden rise in crimes involving Dixing people, and we find out what happened to Li Qian's grandmother.
Another case at Dragon City University leads to more cat and mouse between Zhao Yunlan and Shen Wei. Students of Shen Wei's colleague, professor Zhang Ruonan, are getting murdered on campusand Zhao Yunlan and his team investigate.
Due to Zhu Jiu's machinations, Shen Wei is apprehended at a crime scene and interrogated by the SID. He is believed innocent, but asks to be allowed to join the investigation.
The case is about a serial killer who leaves behind faceless corpses. They keep running into a young man, who is playing vigilante, trying to catch the killer himself.
When a young man and woman vanish, Zhao Yunlan and the SID team are called to investigate. Shen Wei can't seem to stay away from the case either, and Zhao Yunlan continues to try and discover what Professor Shen is hiding from him.
