In a dusty post-war summer in rural Warwickshire, a doctor is called to a patient at lonely Hundreds Hall. Home to the Ayres family for over two centuries, the Georgian house is now in decline. But are the Ayreses haunted by something more sinister than a dying way of life?

Based on the real life story of legendary cryptanalyst Alan Turing, the film portrays the nail-biting race against time by Turing and his brilliant team of code-breakers at Britain's top-secret Government Code and Cypher School at Bletchley Park, during the darkest days of World War II.

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.

In just one moment 19-year-old Hannah's world shatters when her parents are murdered in front of her. After fleeing, she seeks refuge with family friends before becoming the embodiment of rage and revenge towards those responsible for destroying her life. An unexpected connection with a handsome young Nazi Officer generates a moment of respite, but she is consumed by vengeance at any cost, no matter what or when. The story is inspired by the true events of women who helped defeat the Nazis during WWII.