In the 21st year of the Republic of China, the war in Songhu was clouded, and the beach in Shanghai was in turmoil.
Detective Shen Yanzhi, who returned from studying in England, opened a detective agency in the concession in order to find out his father's bizarre murder ten years ago. A British American Tobacco company executive's "sudden death in a secret room" case was exactly the same as his father's old case. His father's private seal, which had been missing for many years, was found at the scene, which revealed a shocking conspiracy of British intelligence agencies colluding with traitors in the Beiyang and Nationalist governments.
Night shadow poison, secret network of spies, arms smuggling, under layers of fog, Shen Yanzhi fights side by side with Inspector Gu Yanzhi of the Patrol Room and female reporter Lin Wanqiu. They pursue the murderer in the flames of war and conspiracy, using the truth as their blade to tear open the fig leaf of darkness. With the outbreak of the January 28th Incident, the Japanese army raided Shanghai, and the mastermind behind the old case gradually emerged. The crime of treason was intertwined with the anti-Japanese crisis. A duel concerning the life and death of the family and the country began in the smoke of the isolated island.
Shen Yanzhi pursued the real murderer with ten years of obsession and protected Shen Cheng with all his courage. When the smoke gradually cleared and the old case finally came to light, he and the people around him persevered amidst the burning lights and flames of war, letting the truth be revealed to the world and keeping the moonlight on the isolated island.
"Inkstone Hidden Evil" takes the investigation of the Republic of China as its bones and the feelings of family and country as its soul. It writes about the truth and perseverance in troubled times. The inkstone hides traces and the pen is bold. In the years of war, it seeks a way home and defends a city.