Hong Kong's Criminal Intelligence Bureau Chief Inspector, Cheuk Hoi, probes his colleague's mysterious death and the disappearance of five crucial undercover agents. These agents hold vital secrets, compelling Cheuk Hoi to uncover the truth. Among the undercover agents, Ting Siu Ka seeks her true identity by infiltrating the triads, forming a complex relationship with Sit Ka Keung. However, complications arise when Cheuk Hoi abruptly halts her mission, involving the Independent Commission Against
