Wo Hu

Worried that the triads are becoming too powerful, the Hong Kong police launches Operation "Wo Hu" and assigns up to 1,000 cops as undercover agents to infiltrate the gangs. When the three main triad leaders Jim (Eric Tsang), Walter (Francis Ng), and Tommy (Julian Cheung) find out about the operation, they also seize on the crisis as a chance to expand their own turfs and eliminate their foes...