At the beginning of 1926, Xu Chari, a criminal lawyer who was committed to upholding the justice of laws and regulations, resigned because he couldn't bear the insider anger of many power and money transactions, and rushed to a slum in Zhenjiang, Jiangnan to open a civilian legal service office, which hired lawyers for the poor who didn't hire criminal defense lawyers.
In the process of resisting the black forces, Xu Charlie made a responsible female detective Ling Xiaogu, and the two gradually developed feelings. Xu Chari, who devoted himself to the people, became a hero in Jiangzhou slum, but was framed as intentional homicide because he angered Shang Hongfa.
In the past, all-powerful criminal lawyers became prisoners, and Lingxiao Valley ran around to save the right people. Many fair and just energies lend a helping hand in succession, and finally help Xu Charlie to clear his name.
After all, Charlie Xu struggled with Shang Hongfa, organized various progressive forces in Jiangzhou, and got in touch with the Northern Expeditionary Army that invaded the north. Charlie Xu and Lingxiao Valley took part in the Northern Expeditionary Army's battle to break Jiangzhou. Lingxiao Valley bravely gave up, and Charlie Xu finally embarked on a new road to find glory.