The film mainly tells the murder of a group of revolutionaries disguised as a caravan. Ren Weiming received the task: cooperate with the Tongmenghui to escort a batch of arms to the south to prepare for an armed uprising against Yuan Shikai, and in the middle of the journey, he started a journey of open and secret battles with small warlords, bandits, and black market merchants.

In the Republic of China, old Shanghai gambling, the society is dying. Qingyue (Wei Haishan) was chased to the No. 41 casino by Yan Zi (Yuan Zhongfang), one of the four kings. The magician who was performing on the stage was rescued before he escaped. After the Qingyue learned that the magician was actually the South gambling king He Zhongqian, he was trained by him.

An honest law officer who is attempting to uncover the conspiracy going on in the town and, in the process, ends up getting framed for murder as he upholds the truth in a quest to prove it's innocent and find the real culprit.