London, 1914: The leaders of the radical women's rights movement are fugitives from the law. Their last line of defense is the secret society of "Amazons": women trained in the martial art of bartitsu and sworn to defend their leaders from arrest and assault.

After a series of daring escapes and battles with the police, the stakes rise dramatically when the Amazons are forced into a deadly game of cat and mouse against an aristocratic, utopian cult...