Æon Flux (2005)

"The perfect world meets the perfect assassin."

400 years into the future, disease has wiped out the majority of the world's population, except one walled city, Bregna, ruled by a congress of scientists. When Æon Flux, the top operative in the underground 'Monican' rebellion, is sent on a mission to kill a government leader, she uncovers a world of secrets.