该剧讲述了一群智慧超群、忠诚于国家的国安干警在平凡的日常生活中，发现了一系列可疑事件，并通过高超的侦查技术和对国家、对人民的忠诚与热爱，最终打击了一伙间谍分子的故事。段迎九是厦州市国家安全局的优秀侦查员，他在一次看似普通的失踪案件调查中，发现了一些异常的蛛丝马迹。随后，厦州市国家安全局成立了三号专案组，由段迎九担任临时组长。段迎九召集了大峰、老魏等旧部同事，以及新晋干警黄海、朱慧和丁晓禾等人，组成了老、中、青三代国安干警团队。在段迎九的带领下，团队运用各自的专业技能，通过抽丝剥茧，最终揭露了一桩十多年前的旧案，并成功将藏匿在厦州市的间谍绳之以法。整个行动被命名为“凤凰行动”，代表着国安干警在打击间谍分子的过程中所展现出的勇气和智慧

The play tells the story of a group of national security officers with superior intelligence and loyalty to the country who discover a series of suspicious incidents in their ordinary daily life, and through superb It is the story of a group of spies finally struck down by the outstanding investigative technology and the loyalty and love for the country and the people. Duan Yingjiu is an excellent investigator of the Xiamen City National Security Bureau. During the investigation of a seemingly ordinary disappearance case, he found some unusual clues. Subsequently, the Xiamen City State Security Bureau established the No. 3 task force, with Duan Yingjiu as the temporary team leader. Duan Yingjiu convened old colleagues such as Dafeng and Lao Wei, as well as newly promoted police officers Huang Hai, Zhu Hui, and Ding Xiaohe to form a team of three generations of national security officers, the old, the middle, and the young. Under the leadership of Duan Yingjiu, the team used their respective professional skills to finally reveal an old case more than ten years ago and successfully brought the spies hiding in Xiamen City to justice. The entire operation was named "Operation Phoenix", which represents the courage and wisdom shown by the national security officers in the process of cracking down on spies