During the Republic of China, the current situation was turbulent and the country was in decline. The Japanese invaders not only set their sights on the Chinese territory, but also extended their black hands to the treasures of Chinese culture. After the September 18th Incident, organized and planned looting of cultural relics intensified, and countless treasures were robbed and displaced. At this time of crisis, our party has resolutely shouldered the important task of protecting the national cultural heritage and led the establishment of a number of cultural relics protection organizations. These institutions are like iron walls hidden in the dark, silently guarding the civilized blood of the country and its people. Lin Mo, Yan Zheng and Zhao Hu are one of them. Each of them has their own unique skills. On the invisible battlefield, they engage in a desperate battle with the Japanese aggressors and various forces who plunder the national treasure. They are like sharp blades in the dark night, ready to deliver a fatal blow to the invaders at any time.