In the early 1970s, Hong Kong had not yet established the Independent Commission Against Corruption, and corruption was rampant, making it difficult for the people to make a living. The police station's Sha Zhan Wang Yichong is upright and unwilling to collude with others, so he cannot tolerate othersOfficer, being excluded from the police station. In one operation, Wang Yichong's subordinate, Mosen, even shot him from behind and severely injured him. At the same time, Governor Murray MacLehose appointed Sir Murray Chan to investigate corruption in Hong KongKuang, his assistant Ma Anni asked Wang Yichong for help. After investigation, Wang Yichong learned that Morrison injured himself out of helplessness. Morrison was actually forced by the situation, so he found Morrison and selected one from the police academyBatch of elite students, start collecting evidence of corruption groups together, and launch the first attack on Hong Kong's integrity!