Chen Qian officially joined the Communist Party of China, and Chen Shen took him to swear an oath in front of the party flag, and embarked on a new path since then. Wu Ruonan learned of the case of Gu Manli being shot, and asked Chen Qian if he had anything to do with him. Wu Ruonan accused Chen Qian of betraying the party, and the two quarreled violently. Fatty Qian hurriedly stopped the two of them from continuing to quarrel and talk about business. Fatty Qian inquired about some news at the pier, which should be related to uranium ore, but they can no longer startle the snake with grass recently. Wu Ruonan asked Chen Qian what he would do if one day the Japanese ran away from the Kuomintang and the Communist Party, and there would be a war. Chen Qian didn't answer, and beat the Japanese away first.
Xie Dongdong got the news that the CCP had instigated another important person from the Political Security Bureau, Xie Dongdong quickly sent someone to investigate. Chen Qian and Yu Chunyang blow up balloons for Yu Jiazi to hold a party, Chen Qian decides to move out, and Yu Jiazi is very reluctant about it. Yu Chunyang was leaving too, but they said they would come back to visit Yujiazi more often, and Yujiazi was still very sad. Yukako is full of kindness to everyone, and children without father and mother lack love.
Chen Qian and Yu Chunyang played their roles carefully. Yu Chunyang gave him a book, which was the code book between them. If Chen Qian couldn't find her, he could use the code book to contact her. Chen Qian flipped through the book, complaining in her heart that Yu Chunyang was being stingy for not writing a single word. At Shanghai North Railway Station, Wu Ruonan called Chen Qian and said that he would take him to breakfast, but he was actually passing on the news. Chen Qian called Captain Zhou to take him around, He Dabao was a little unconvinced.
Xie Dong found Wu Ruonan, and Wu Ruonan was taken aback for fear of being seen by the spies. Xie Dong spent a lot of effort to find Wu Ruonan this time. What he had to do was to drive a wedge between Wu Ruonan and Chen Qian. After all, he was always pro-communist, and he was devoted to the party and the country. Wu Ruonan defended Chen Qian very much, Xie Dong insisted on finding evidence, and did not forget to win over Wu Ruonan, only the two of them working together would have the best chance of winning. Xie Dongdong also found out about the package that Fatty Qian had bought, and learned about their actions.
Captain Zhou took Chen Qian to Warehouse No. 6 at Shilipu Wharf. He was curious about what was stored there, but no one was allowed to enter here without the permission of the Mei Agency. Second Palace suddenly appeared and asked to let Chen Qian in, but Captain Zhou was not allowed to enter. There are supplies for the National Games in Japan, and there is also a top-secret room inside. Chen Qian observes the surroundings of the factory while talking with Ninomiya. Captain Zhou shot suddenly, saying that he saw the shadows of two suspects, but did not catch them. Chen Qian hurriedly contacted Yu Chunyang, and Yu Chunyang hurried to Xu Dehai's place. What he reported was about uranium ore, and Xu Dehai told her to take care of it while not interfering with Chen Qian's work.
Chen Qian went to Wu Ruonan, and Wu Ruonan decided that the person who appeared near the warehouse must be Xie Dongdong. Chen Qian decided to find out tonight. Wu Ruonan specially told other dancers that he would go to Chen Qian's appointment at night, and he could also be his time witness. But unexpectedly, Xie Dong went to the ballroom to find Wu Ruonan again at night, and Wu Ruonan was very impatient with him. Xie Dongdong decides to find uranium ore tonight, to prove that he is better than Chen Qian, and it is him, not Chen Qian, who can give Wu Ruonan what he wants. In the evening, Wu Ruonan went to the hotel and entered the room that Chen Qian had reserved.
Fatty Qian looked out, and Chen Qian entered the No. 6 warehouse at Shiliupu Wharf. Wu Ruonan was a little impatient waiting at the hotel, thinking of Xie Dong's words, he changed into men's clothes and rushed to Shiliupu Pier. Xie Dongdong knew that Wu Ruonan would definitely come, so he found her immediately and asked her to change into Japanese clothes, which might help Chen Qian. As soon as Wu Ruonan changed his clothes, he heard that there was a fire. Chen Qian took the opportunity to sneak into the No. 6 warehouse, opened the locked door, and confirmed that the things inside were some gold, silver and jewelry. When leaving, Chen Qian didn't notice that she had missed something. Soon Er Gong arrived, Wu Ruonan and Xie Dongdong couldn't open the secret door, but they found that there were signs of being pried open.