Æon Flux is set in a surreal German Expressionist style futuristic universe. The setting comprises a bizarre dystopia populated by mutant creatures, clones, and robots set within the two separated border wall cities of Monica and Bregna. The title character is a tall, sexy, dominatrix scantily-clad secret agent from the city of Monica, skilled in espionage, assassination and acrobatics. Her mission is to infiltrate and destroy the strongholds of the city of Bregna , which is led by her sworn enemy, and sometimes lover, Trevor Goodchild, the technocratic dictator of Bregna, whose citizens are called Breens. The two cities engage in a futile never ending war for ideological supremacy; while Monica represents a dynamic nihilistic anarchist society where rules do not exist, Bregna embodies a centralized scientific planned Orwellian police state. The names of their respective characters reflect this: Flux as the self-directed agent from Monica and Goodchild as the self-appointed leader of Bregna. Themes of tragic/forbidden love run through out the series as Trevor has everything but what he truly wants, Æon, and Æon can accomplish anything she wants except killing Trevor.