Insider prequel

On the eve of the fall of Nanjing in 1937, patriotic student Chu Xiangxue collaborated with her underground party boyfriend Wu Bing to set up a trap to assassinate a traitor, but was accidentally discovered by Liang Dong, a college classmate who had a crush on him. Liang not only killed Wu Bing by mistake, but was also involved in a shocking case of leaking military secrets, and was put on death row. Nanjing fell, and Liang Dongge, whose life was hanging by a thread, escaped from prison by chance. Without knowing the truth, he also rescued a dying prison inmate - traitor agent Li Bingyuan. On the way to escape, Brother Liang Dong met Li Wan, a girl who fell in love with him at first sight. After the two fell into the clutches of the Japanese army, they were rescued by the Kuomintang agent captain Chu Liyan. Brother Liang Dong joined this anti-Japanese team and was trained as an agent with special skills. A few months later in Shanghai, Brother Liang Dong followed Chu Liyan and landed secretly to perform a latent mission. Chu Xiangxue also appeared mysteriously with a top-secret list entrusted to her by her underground party boyfriend before his death. Brother Liang Dong unexpectedly discovered that his mentor in college, Shao Shuan, had transformed into a powerful tycoon in the Japanese-occupied Shanghai area. Li Bingyuan, whom he had rescued, became the head of the puppet Shanghai Secret Service, and the girl Li Wan who had always been infatuated with him turned out to be Li Bingyuan's biological sister who regarded him as the apple of his eye. In order to win the top-secret list in Chu Xiangxue's hands, the country, the Communist Party, and Japan launched a battle in Shanghai. Brother Liang Dong and Chu Xiangxue are also here