The novel centers on the character of Rudolph Hartmann, a militant anarchist who seeks to destroy London as part of his radical campaign against the capitalist system. Hartmann commands a terrifying airship called the Attila, equipped with powerful weapons, and uses it to wreak havoc on the city. His goal is to overthrow the oppressive societal structures that he believes exploit the working class.The story is narrated by a young, idealistic man named Stanley, who initially sympathizes with some of Hartmann's anarchist ideals but is horrified by the extent of the violence Hartmann is willing to unleash. As Hartmann’s anarchist dreams of destruction unfold, the novel portrays a futuristic London ravaged by chaos and devastation, offering a bleak vision of the consequences of radical extremism.Fawcett's novel is unique for its time, combining elements of speculative technology (such as airships) with political commentary on the rise of anarchist movements in the late 19th century. It anticipates the destructive potential of modern warfare, particularly aerial bombardment, which would become a reality decades later.