After arriving for his honeymoon at the Tower of Babel, a hub of kingdoms stacked one on top of the other, mild-mannered headmaster Thomas Senlin gets separated from his new wife. Senlin is determined to find Marya, but to do so he'll have to navigate madhouses, ballrooms, and burlesque theaters. In order to survive betrayal, assassins, and the long guns of a flying fortress, he'll have to do more than just endure: he needs to become a man of action.