On Guy Fawkes Night in London in 1997, a financially desperate 16-year-old, Evey Hammond, sexually solicits men who are actually members of the state secret police, called "The Finger".
When a Scottish gangster named Ally Harper murders Gordon, a vengeful Evey interrupts a meeting between Harper and Creedy, the latter of whom is buying the support of Harper's thugs in preparation for a coup d'état.