The forerunner tells the story of 193 1 year. Because of a traitor's leak, my underground party organization in Shanghai was seriously damaged. Ma Tianmu (played by Edward Zhang), who has just returned from French, receives an order at a critical moment. Under the guise of being the manager of the foreign firm in the concession, he wandered among various bureaucratic gentry and police gangs, and with Tang Xianping, the spy organization "Fuxing Society" (played by Nie Yuan)

Although there is no publicity, the cast is not bad, including Edward Zhang, Nie Yuan, Cecilia Han, Guo Xiaoting, Huo Qing, Cao Weiyu, Zhao Yang and others.

Ma Tianmu soon found Chen Lie with the password given by Lao Wu after he went to prison, and knew in the password that "Document No.0" was now hidden in Hujiang apartment. The police office has learned about Buel's murder and insurance fraud. Before, I turned a blind eye. This discovery has something to do with Buel, so I immediately got refreshed and rushed to investigate.

In desperation, Boer had to give in to Inspector General Fan Yiting, and they made a deal: Boer gave Fan Yiting opium for free, and Fan Yiting stopped investigating murder and insurance fraud. But Boolean put forward a condition that in order to avoid future trouble forever, Ma Tianmu, who knew the inside story of murder and insurance fraud, must be put to death.