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 man without attachments or responsibilities suddenly finds himself with an abandoned baby and leaves for London to try and find the mother. Eight years later after he and his daughter become inseparable Gloria's mother reappears.