Japan is occupied by the Britannia Empire. The key to the Britannia Empire’s power are humanoid weapons of overpowering military strength called Knightmare Frames. Lelouch has secret ambitions in his heart and will to stop at nothing to achieve his goals. His friend from childhood Suzaku aspires for justice and is unwilling to abandon truth and equality. Little do they know that their beliefs and ambitions will lead them to fight each other, a battle that comes with a devastating price.