When Emperor Chongzhen of the Ming Dynasty ascended the throne, the eunuch Wei Zhongxian (played by Jin Shijie) and his "eunuch party" were wiped out by the Jinyiwei. Among the Jinyiwei, the three sworn brothers Lu Jianxing (played by Wang Qianyuan), Shen Lian (played by Zhang Zhen) and Jin Yichuan (played by Li Dongxue) were the most courageous and upright. In order to be promoted to a centurion, Shen Lian redeemed the prostitute Zhou Miaotong (played by Liu Shishi) of the Jiaofang Division, and the third brother Jin Yichuan got rid of the entanglement of the ronin Ding Xiu (played by Zhou Yiwei), the three brothers decided to accept the secret operation of Zhao Jingzhong (played by Nie Yuan), the governor of the East Factory, to hunt down Wei Zhongxian. During the operation, the three were blocked by Wei Ting (played by Zhu Dan), the daughter of Wei Zhongxian. After a bloody storm, Wei Zhongxian's body was brought back. Lu Jianxing was promoted to a centurion as he wished. He thought that the three people's long-cherished wishes would be realized, but he didn't expect that Shen Lian actually concealed a huge secret, which aroused the suspicion of Minister Han Kuang (played by Zhao Lixin). After that, the three brothers were in danger of their lives. Shen Lian finally told the truth but it was too late. The woman in the clinic (played by Ye Qing) who was in love with Yichuan and Zhou Miaotong were implicated. Facing the crisis, Shen Lian decided to leave the capital with his brothers and lover. The court was corrupt and chaotic. What would happen to the fate of the little people?