The film tells the story of humble London restaurant owner Quan (Chan), whose long-buried past erupts in a revenge-fueled vendetta when the only person left for him to love — his teenage daughter — is taken from him in a senseless act of politically-motivated terrorism. As he searches for the people responsible, he seeks the assistance of Irish Deputy Minister, Liam Hennessy (Brosnan), an ill-fitting government official whose own troubled history comes to bear down on him. As Quan enters into a game of political cat-and-mouse with Hennessy, both men must confront their pasts as they try to identify the elusive killers.