Episode 28 recap: Chen Ke Hai's old comrade-in-arms appeared.

Fang Li informed a passerby that the person ahead was harassing a married woman. He offered a certain reward if the passerby helped teach him a lesson. The passerby agreed readily. Chen Ke noticed Luo Bing's arrival at Mu'en High School and secretly followed him. While Chen Ke was carrying out his mission, he discovered that the two individuals were members of our party. In a moment of hesitation, he was unexpectedly abducted by them.

In the end, the members of our party were arrested. Fang Li stated that if they didn't speak up, he would take something from them and give it back to them. Chen Ke Hai's comrade-in-arms, who had been missing for two years, returned, and Fang Li wanted to hear his story. Luo Bing was being followed by Liu Yuan Dong, and when Chen Ke Hai noticed, he secretly followed Liu Yuan Dong. He intentionally pointed out to bystanders that Liu Yuan Dong ahead was harassing a married woman and offered a reward. Subsequently, the bystanders beat up Liu Yuan Dong.

Chen Ke Hai followed Luo Bing to Mu'en High School. Fang Li received news that people from Yan'an were also coming, and he instructed Old Jin to capture this person at all costs. Luo Bing approached a janitor, whose body was covered in rashes but still insisted on working. She advised him to take a rest, but he refused. When Chen Ke Hai was watching the two of them from a distance, he was spotted by others. Later, Chen Ke Hai arranged for Doctor Zhang to treat the janitor.

Luo Bing thanked Chen Ke Hai for his help and explained that she joined the Military Statistics Bureau (军统) because her father passed away. When she was young, a bandit broke into her house, and she cut off his arm and escaped. Later, she joined the Military Statistics Bureau, and the first time she held a gun, she felt capable of protecting her mother. Chen Ke Hai was willing to arrange for her to leave with her mother and Xiao Bao, but Luo Bing said her mother wouldn't leave the school.

Fang Li found the whereabouts of the Communist Party members, and he specifically sent Chen Ke Hai on this mission, stating that it was his duty as member 76, but the real purpose was to investigate his identity. The janitor thanked Chen Ke Hai and hoped that he could overlook some of Luo Bing's shortcomings because she had been out for too long, and Luo Bing left with Chen Ke Hai.

When the two of them arrived home, they found Fang Li waiting at their doorstep. Chen Ke Hai and Fang Li left, and from Luo Bing's gaze, one could see her hatred towards Fang Li. It was only when they were close to the destination that Fang Li informed Chen Ke Hai about the mission. Chen Ke Hai felt that Fang Li's position as the chief made Chen Bin resentful, so he wanted to give credit to Chen Bin this time, but Fang Li insisted that he deserved credit.

The area downstairs was filled with Fang Li's people, and Chen Ke Hai insisted on personally carrying out the mission, as how could the chief hide behind others? The Communists sensed that something was amiss, and at that moment, someone disguised as a patrolman barged in. Chen Ke Hai was the first to break in but was taken hostage by Lao Bai, while the female Communist was about to escape but was captured by Old Jin.

Fang Li said that Chen Ke Hai was the weakest member of 76. After careful consideration, Lao Bai released Chen Ke Hai and surrendered. Fang Li still suspected that Chen Ke Hai had secretly arranged for Old Jin to keep an eye on him. Fang Li received a telegram from a spy embedded in Yan'an, stating that in August of the 30th year of the Republic, a Communist entered number 76. Fang Li didn't know who to act against, and Chen Bin knocked on the door and found Fang Li hastily hiding something. He reported the incident of encountering Chen Ke Hai's old comrade-in-arms to Fang Li. The man was quite tight-lipped and said he would only be willing to divulge information after meeting Chen Ke Hai. He also knocked a thousand yuan.

Chen Ke Hai went to Lao Duan's pharmacy at night to pick up medicine but arrived to find it closed. Lao Duan told him to try another store, so Chen Ke Hai intentionally visited a few more shops. He noticed someone following him. Fang Li brought him to the interrogation room and had a conversation with Lao Bai. Fang Li learned that their purpose for coming was to persuade their superior, Li Shi Qun, to surrender. However, Lao Bai had nothing to disclose. Fang Li also knew about their other mission, but Lao Bai remained tight-lipped, even when Fang Li tried to use their "seven-step technique" on him. Fang Li interrogated Lao Bai, threatening to use a female Communist from the neighboring room to intimidate him.

Upstairs, Luo Bing recognized the person supervising Chen Ke Hai as one of Fang Li's men. Li Tang insulted Miss Zhao, and Lao Bai became angry and told them to stop. Fang Li noticed Lao Bai's emotional attachment to Miss Zhao and gave them twelve hours to consider their options. If they still refused to cooperate after the deadline, Fang Li threatened to use their belongings against them. He promised that if they agreed to cooperate, he would help them escape to Hong Kong.

Fang Li recalled Chen Ke Hai's expression during the arrest of the Communist Party member. At that moment, Chen Bin came to report that Lao Bai remained stubborn and refused to talk even under torture. Fang Li scolded Lao Bai for using excessive force and ordered him to stop. After twelve hours, Lao Bai handed over something taken from the captive.

Fang Li wanted to meet Chen Ke Hai's old comrade-in-arms and asked Chen Bin to arrange a meeting. Luo Bing handed Chen Ke Hai a glass of milk and offered to pass on a message for him, wondering if their contact had failed because he bought so many things. However, Chen Ke Hai didn't want her to get involved and advised her to rest early.

Song Qing Shan was falsely accused by a cook at the hotel of stealing food. Fang Li arrived, and the cook was taken away by the boss. Song Qing Shan expressed his desire to meet Xiao Hai and asked Chen Bin if Chen Ke Hai's family was wealthy. Fang Li informed him that Chen Ke Hai's family had some wealth.

Fang Li said he would arrange a meeting with Chen Ke Hai, but the condition was that Song Qing Shan had to reveal some information about Chen Ke Hai first. Song Qing Shan was cautious and insisted on meeting Xiao Hai before disclosing anything. After receiving two silver dollars from Chen Bin, Song Qing Shan hurriedly went to the impoverished area called "Sanchuan Tangzi," thinking that trusting Fang Li's arrangements might not be reliable.

At that moment, Song Qing Shan gave the money to his seriously ill mother, saying they would soon move to a big house and live like wealthy people. Fang Li handed over ten fingernails to Lao Bai and instructed Chen Bin to exchange gifts with him every hour.

Chen Ke Hai went to the interrogation room to inquire about the progress of the interrogation. He exchanged a meaningful glance with Lao Bai and left. At a restaurant, Chen Ke Hai ran into his former comrade-in-arms, Song Qing Shan. At that time, Chen Ke Hai was wearing a Communist military uniform and was talking to Lao Duan. As a member of the Nationalist Party, Song Qing Shan recognized Chen Ke Hai and called out his name, but his comrades dismissed it as a mistake.

Chen Ke Hai heard someone calling him and saw his old comrade-in-arms hiding in the room to avoid revealing his identity. Song Qing Shan was excited to see Chen Ke Hai and asked if he had joined the Communist guerrilla forces after their unit was disbanded. However, Chen Ke Hai mentioned that he was seriously injured at the time and was directly sent to a military hospital before coming to Shanghai. Song Qing Shan wanted to continue the conversation, but Chen Ke Hai interrupted and suggested they have a drink. Chen Bin expressed his curiosity about where Chen Ke Hai had disappeared for two years.

Chen Ke Hai revealed the true identities of Fang Li and Chen Bin as members of the number 76 organization, not foreign firms. Song Qing Shan immediately realized that there were some issues at play.