Ah Sheng is summoned to investigate a case. Hoping to get an extra week off to spend with his wife, he and another officer, Ah Hai, accept the case. It concerns a triad boss named Black Dragon. They suspect him of drug smuggling. Previously, whenever the police were close to solving the case, higher-ups would simply drop it. Ah Sheng and Ah Hai suspect that higher-ups are accepting bribes from Black Dragon. Later…