A humble London businessman, Quan Ngoc Minh, leads a peaceful life until a terrorist attack orchestrated by a rogue faction of the IRA claims the life of his teenage daughter. Devastated by the loss and frustrated by the apparent lack of progress from the authorities, Quan takes matters into his own hands. He relentlessly pursues Irish Deputy Minister Liam Hennessy, whom he believes holds valuable information about the terrorists. Hennessy, a former IRA member now turned government official, claims ignorance, but Quan's persistence soon uncovers more than lies on the surface.

As Quan employs unorthodox methods to pressure Hennessy, the situation escalates. Hennessy's ties to both the government and his former IRA comrades get exposed. The tension builds as layers of deception are peeled away, revealing deeper conspiracies and hidden agendas. Quan’s quest for justice collides with Hennessy’s efforts to maintain political stability, leading to a tense and unpredictable confrontation. The stakes rise as both men struggle with their personal demons while navigating the dangerous waters of vengeance and moral ambiguity.