After an incident involving geass, Lelouch is plunged into a whole different world. While in this world, Lelouch encounters a resistance movement fighting against an oppressive empire. As a result, in order to survive and potentially return to his world, Lelouch must use his intellect along with the charisma of Zero to help the resistance movement achieve victory.

Lelouch and Kallen are both flung back in time following the Zero Requiem to the year 2017 a.t.b., before the Black Rebellion. Using their knowledge of the future, can they free Japan from the Britannia and fix their past mistakes. Or are they doomed to repeat them?