Song Zhuowen began to search for clues to find the person who might have obtained the information that day, a man in a suit. Pan Yue, the head of the Intelligence Unit of the Special Service Division, was also searching for clues to investigate. The two followed the clues and raced all the way to find them. They found them almost simultaneously..But Song Zhuowen was finally one step ahead and tracked down the traitor first, and shot him to death after negotiations failed.Although Zhuo Wen killed the traitor, the cigarette rod containing the information was still found by the people from the Secret Service. They took out the film negatives hidden in it and locked it in the safe by Guan Xue.Guan Xue's superior, Asano Daigo, who was sent to Harbin by the Japanese military intelligence agency, was assassinated on the way to Harbin, but he did not die. He was injured and admitted to the hospital. Asano Daigo told Guan Xue that this killer may have been in many places many times.One of his assassins, an anti-Japanese activist nicknamed “Manchurian Robin Hood”, Guan Xue suggested to Asano Daigo to release the news that Asano Daigo was going to be discharged from the hospital, luring the anti-Japanese activist to show up again, and setting up an ambush to arrest him., Asano Daigo agreed to this suggestion.Guan Xue also reported the film negatives to Asano Daigo, and Asano Daigo asked Guan Xue to show it to him quickly.