Quan is a humble London businessman whose long-buried past erupts in a revenge-fueled vendetta when the only person left for him to love – his teenage daughter – dies in an Irish Republican Army car bombing. His relentless search to find the terrorists leads to a cat-and-mouse conflict with a British government official whose own past may hold the clues to the identities of the elusive killers. A humble businessman with a buried past seeks justice when his daughter is killed in an act of terrorism. A cat-and-mouse conflict ensues with a government official, whose past may hold clues to the killers' identities.