1960s winter. The secrets come back to attend my new submarine research and production of Chinese experts, via Hong Kong by Taiwan spy kill, and nearly died.
Bureau of Beijing's anti-spyware immediately analyze the situation and make a judgment of my internal spy, and prompt investigation. To wait for retirement Xuzi Feng and young counter-espionage officers Luo battle, and former expatriates in Hong Kong blue Meiqin group of three to accept the task.
Xuzi Feng's three-member team began to find the internal spy, but has not made significant progress. At this time, the sudden appearance of a defector from Taiwan's intelligence services, but Ge contingent, he claimed that he could provide intelligence spy for Beijing. After meeting in Hong Kong, Xu Zifeng Ge contingent identity is basically credible. Ge then subsequently began to provide relevant information and intelligence clearly refers to the view that the spy responsible for submarine manufacturing director of the Institute of Ma Zhiyuan, which makes everyone was shocked. The ensuing for Ma Zhiyuan a series of fruitless investigation, so that the Xu Zaifeng began to doubt that the Ge contingent is a disinformation aimed at disrupting the line of sight, our investigation into the misunderstanding. Ge then obviously order to further confirm the credibility of his information was also provided new clues to the Luo war captured Zhou Weimin, ready to Beijing during the Spring Festival bombings spy. In this but the credibility of Ge then get more recognition when the Xu Zifeng suddenly realize the true intentions of the Taiwan intelligence agencies: false defectors, but Ge contingent shift our attention to achieve cover for real spies, their next course of action fight for the purpose of the time.
In order to Qiaoshanzhenhu Xu Zifeng side requirements and Ge then meet again, put the export wind side, claiming that the purpose of this meeting is to expose the Ge and then fake defection trick. Sure enough, after Ge contingent should be about to arrive in Hong Kong was killed by gunmen in Taiwan. Ge natural death, not only confirmed the false defectors is a trap, Xu Zifeng them to internal spy suspects concentrated in the the Fan Shicheng body of the person in charge of the Institute of Security Department.
Taiwan in Beijing's another lurking spy Mao Yang, are stepping up their action, the goal remains our submarine project and assist the Chinese experts. Closely monitored in the blue Meiqin and Luo war, the enemy again, the assassination of ethnic Chinese experts, a series of activities have been thwarted. Seeing my submarine project nearing completion, Fanshi Cheng and Mao Yang feel doom approaching. Instruction in Taiwan, they are crazy gamble: the theft of submarine test data, the assassination Xu Zaifeng, destroy submarines, pilot plant, shootings ethnic Chinese experts ... After some battle of wits between life and death battle, to Xu Zaifeng the enemy of the group of three conspiracy and failed to successfully captured the long-term latent spy Fan Shicheng, to ensure the safety of Chinese experts and the successful completion of the submarine project.
The harsh struggle of this secret and tortuous, the former wife Li Jing Xu Zifeng out of years of psychological shadow; their daughter Xu Wanyun latent incoming spy Lu Yifu has gone through a dangerous and sad love; Luo battle in the struggle gradually mature; the blue Meiqin to her intelligent and wise to promote the work of the group of three, and fell in love with Luo war; Xu Zifeng is more subjected to a huge dilemma, in national security and personal feelings between the two tough choices. When the final victory comes the Xu Zifeng a three to regain harmony and warmth, and Blue Meiqin but accepted the new tasks on New Year's Eve, walked out to go into exile, which Luo war left a deep melancholy.
However, they really are very clear, as a national security to defend the interests of the motherland will always be first. Personal destiny and feelings, must unconditionally obey hidden in that noble mission. Because they will be a lifetime to fulfill the oath of allegiance of the heart.