William Luk, an investigator from the Independent Commission Against Corruption (ICAC), is dedicated to uncovering a complex web of corruption and conspiracy within the Hong Kong financial market. During his investigation, Luk discovers that a leading financial services company, likely involved in illicit activities, is linked to a major corruption scandal. When Luk digs deeper, he realizes that the case involves high-profile figures who are pulling strings behind the scenes. Determined to expose the truth, Luk faces significant obstacles from both within his organization and from external threats that put his career and life at risk.

As Luk continues to gather evidence, he unravels a series of interconnected schemes that include money laundering, financial fraud, and even potential governmental corruption. The deeper he goes, the more dangerous the mission becomes, as powerful adversaries employ desperate tactics to silence him. With time running out and the stakes higher than ever, Luk must navigate treacherous waters to ensure justice is served. His quest for truth and integrity tests his resolve and requires the assistance of unexpected allies, as he confronts both professional and personal challenges along the way.