In 1994, the cross-strait situation suddenly became tense due to Lee Teng-hui’s divisive remarks.Wu Shenglai, director of the National Security Bureau of Minzhong City, received the information and immediately contacted Wei Guangjin, the director of the Second Division who was on a mission in Hong Kong: Taiwan has activated high-level intelligence relations, and one of Wei Guangjin's old friends is also in danger.Support is on the way, but timely response is not guaranteed.

This old friend is Jiang Zaizhen, deputy director of the Fourth Division of Taiwan's military intelligence department.She discovered that the office was equipped with surveillance equipment and judged that she was no longer safe. She immediately changed her schedule and rushed to the airport.Wei Guangjin followed her here with Ma Qi and Yin Baoshan. When he saw her changing clothes and covering her face to board the plane, he took the same flight and followed her.

Jiang Zaizhen did not go to Europe as planned, which made Zhu Yingjia realize that the situation was not good.Zheng Guiping, deputy director of the military intelligence department, is currently deploying two routes to infiltrate the mainland: one is to identify targets among mainland youths, including those who have just entered the national security system; the other is to send personnel from Taiwan to try to enter party and government agencies, the military and enterprises.Zhu Yingjia quickly reported that Jiang Zaizhen had lost contact to prevent the information she took away from affecting subsequent actions.

After the flight arrived in Southeast Asia, Wu Jiali pretended to be a driver and picked up Jiang Zaizhen.Wei Guangjin noticed someone was following her and immediately asked her to change cars and move to a safe house.Seeing old friends, Jiang Zaizhen told three important pieces of news.The first is missile intelligence: The military intelligence department has long wanted to find out the mainland's missile deployment, and may find a breakthrough in the near future. She once went to Barcelona with Zhu Yingjia to check out the location, but did not know the specific target.Wei Guangjin needs to find out which scientific researchers who master the core missile technology will go to Germany or Spain in the near future.

The second piece of news is that Taiwan will increase its manpower for activities in the mainland.The third article made Wei Guangjin even more alert: a piece of high-level intelligence sent directly to Zheng Guiping, indicating that someone might have penetrated the Min China security system.That person may be about to report for duty, or may have already arrived at Wei Guangjin's side.Jiang Zaizhen even reminded him that the three police officers waiting outside also needed to re-confirm their identities.

Wei Guangjin was worried that something would happen to Jiang Zaizhen if she continued to act alone, so he advised her to accept protection.Unexpectedly, they were intercepted by armed men during the transfer, and they had to evacuate by boat overnight.Arriving at the safe house in Shanghai, Wei Guangjin found that the emergency medicine had expired and Jiang Zaizhen's injuries were getting worse, so he had to go out to buy medicine.Before leaving, he specifically told her not to turn on the lights or open the door to anyone.

When Wei Guangjin came back, the room was empty.Jiang Zaizhen left on her own and took a flight to Macau.She did not realize that the drinking water on the plane had been tampered with, and she was eventually poisoned by cyanide and suffered cardiac arrest.At the same time, a female body was found in the waters of Hong Kong, and the originally tense evacuation operation ended in bad news.

Zhu Yingjia reported to Zheng Guiping that the personnel going to the mainland have started taking action, and subsequent lurking personnel will also be in place in batches.Zheng Guiping recognized the results of his handling of Jiang Zaizhen, but in order to calm internal doubts, he still asked everyone who had contact with her to suspend their duties and undergo review.Li Qing asked Zhu Yingjia and Zhao Wanfen successively, and Zhao Wanfen offered to stay under investigation in exchange for Zhu Yingjia regaining his freedom.

Wei Guangjin went to the beach to mourn Jiang Zaizhen, and the warning she left repeatedly rang in his mind.Ma Qi accompanied him and talked about the situation in which national security personnel could die at any time.On the other side, Li Fengge found Gong Yue and informed him that he had been admitted to the city bureau and asked him to report on time.This young man who is about to enter the national security system has also come under the spotlight of new investigations.