A school teacher discusses types of government with his class. His students find it too boring to repeatedly go over national socialism and believe that dictatorship cannot be established in modern Germany. He starts an experiment to show how easily the masses can become manipulated.

In a world in which Great Britain has become a fascist state, a masked vigilante known only as “V” conducts guerrilla warfare against the oppressive British government. When V rescues a young woman from the secret police, he finds in her an ally with whom he can continue his fight to free the people of Britain.