Spies in the Ancient City

At the turn of summer and autumn in 1949, the founding ceremony of New China was about to be held. In Dancheng, a border defense town that had just been liberated, the Kuomintang spy activities were rampant, trying to subvert the new red regime when our foothold was not stable and we were facing internal and external troubles. The reconnaissance hero Xu Chengdong had just returned from the front line and was ordered to come to the Dancheng City Public Security Bureau to take full charge of the spy investigation work. He Zhiyuan, the daughter of division commander He Qunshan, has a secret love for Xu Chengdong. He Qunshan's old comrade-in-arms Gao Ping, who is about to serve as the mayor of Dancheng City, also feels that the two are a perfect match. Unexpectedly, just after entering Dan City, the convoy was ambushed by gangsters. Public Security Bureau Chief He Qunshan died and entrusted his daughter He Zhiyuan to Xu Chengdong before his death. Xu Chengdong was very conflicted because as early as when he was working as an underground liaison officer in Shanghai, he had already fallen in love with Ge Yinhong, who was pretending to be a couple. However, due to the needs of the revolutionary work, the two were far apart and lost contact with each other... In order to live up to the teacher's dying instructions and to take care of the lonely Zhiyuan, Xu Chengdong finally agreed to the marriage. He devoted himself to the reconnaissance work and temporarily forgot the torment of his inner emotions. Unexpectedly, fate plays a trick on people. Just when Xu Chengdong and He Zhiyuan were preparing to get married, Xu Chengdong's former lover Ge Yinhong unexpectedly appeared and became his comrade again, assisting him in starting a wedding.