I'm glad that Mao Gang, the spy, didn't die laughing, and there is no hope after Yuan Yue's death. The film was shot after Mao Gang's death.

In Yangzhou City, Niu Dabao, a servant in Yangzhou Post Station, designed a bloody drama of "falling from the sky and blooming flowers" in order to propose to his sweetheart Yuan Yue, telling everyone present that he and Yuan Yue had known each other since childhood, which was a touching story of childhood. Yuan Yue slipped a note to a middle-aged man on the court, but Niu Dabao mistakenly thought that someone was touching Yuan Yue and pursued him. As a result, he accidentally got involved in a fight. In the end, the middle-aged man was killed by a group of men in black. When he died, he took out the secret report provided by Yuan Yue from his mouth and gave it to Niu Dabao. He wanted Niu Dabao to send it to the red gang for him, but he didn't say where to send it to whom.