The film tells the story of Wu Guohao and Wei Xiaoxiao, who are capable of fighting and daring, illegally immigrating from Guangdong to Hong Kong to make a living. They are highly valued by the meticulous detective Xu Le and later dominate the black and white factions in Hong Kong. Xu Leben onlyHe is an ambitious young man who joined the police force with the intention of serving the citizens and promoting justice. However, he found that the entire police force was extremely corrupt. If he persisted in his principles, he would only be excluded to death. Under the guidance of his predecessors, he decided toStriving to excel in this corrupt system, Xu Le became the most powerful detective in a short period of time, and improved corruption in a short period of time. Later, due to the growing influence of his good brother Wu Guohao's underworld, Xu Le knew that he could no longer persuade himHelplessly blocking my brothers, I joined forces with the Independent Commission Against Corruption. In the end, during the anti-corruption campaign, I provided a large amount of evidence for the government and also paid the price for what I had done. Two experiences of ups and downsThe brothers eventually embarked on two different paths in life, and Wu Guohao also paid a painful price for his mistakes and criminal evidence.