In the near future, the UK has come under oppressive rule by its own government.
During the course of the movie, we learn that this sad state of affairs began with a "terrorist attack" that the leader used as an excuse to be granted absolute power that he never released. Later we learn the the attack was actually planned by a small number of politicians as an excuse.
Now the people are ruled with an iron fist. Many people who were dissidents or otherwise undesirable (homosexuals, anyone that insulted the prime minister) was taken away in the night and never seen again.
A strange masked hero takes on the entire regime by blowing up a public building and threatening to destroy the house of parliament in one year's time.
- A society that gives up its privacy and rights can become dark and broken and may never regain them.
- With enough technology and complete media control, a very small number of people can subvert and control an entire nation.