Zhang Xiansheng, a young man from a poor family, entered into a street dispute because his family was bullied by gangsters. He used his ruthlessness and resourcefulness to crawl at the bottom and gradually climbed to the top of the gang's power. In the eyes of his brothers, he is the "big brother" who values love and justice, and he is also a ruthless character who is frightened by his opponents. Under the watchful eye of the police, he uses "rules" to package violence and plays games on the edge of black and white.
