Coast defense missile technology is leaked, and deputy chief designer Wu Hongzhong absconds... A shocking spy drama begins. Liang Zhong, director of the Confidential Division of National Security, was ordered by Minister Chen to intervene in the investigation, but found that the matter was far more complicated than imagined. Wu Ming, a returned overseas student from London, had a romantic encounter with the beauty Kazumi Tanaka in a bar in Hong Kong. Shen Bing, the National Security Bureau's Bangkok liaison officer, was raped, murdered and put into a suitcase. The traitor and Wu Hongzhong fled... In this protracted cross-border pursuit, the National Security Council gradually moved out of a mysterious and huge espionage organization. Many of its members had already been lurking within the National Security Bureau, waiting for opportunities to carry out sabotage activities. During the in-depth investigation, arrest, and interrogation process, the National Security Bureau cleared away the heavy fog and launched a desperate battle with spies, moles, and traitors. Who can draw the sword and have the last laugh?