After their costly victory over President Krug and the Patriot Army, eighteen-year-old Kress and her Conspiracy travel to a newly medieval London, England where they are forced to fight their way through two warring factions amid a decimated hellscape. Their struggle for survival takes them on an epic quest through what's left of London as they race to track down a pair of mythical twins, who are rumored to have the unique ability to enter the world of dreams.