After ten years behind the bars in Taiwan, Kong Sai-Hao (Michael Miu) finally returns to Hong Kong. Other than the hope to find his daughter Yau-Yau (Elanne Kong) to mend their relationship, he also plans for revenge. On one hand, he pretends to surrender to triad boss To Yik-Tin (Lam Lee), the man who caused him to be jailed. On the other hand, he tries to gain trust from police officers Chung Lap-Man (Ron Ng) and Lee Pak-Kiu (Sammul Chan). Lee refuses to have a criminal as his friend, but Chung becomes close to Kong to gain inside information about To's activities. To keeps a close watch on Kong but purposely shows that he trusts Laughing (Michael Tse) more and intentionally puts him in a high position, but Kong uses To's wife Ching Yeuk-Sam (Kathy Chow) in the organization as an influence to help Kong rise up the ranks. To is killed and Kong ascends to become the head of...