Code Geass: Marik and Lelouch of Dissension

In a world where exist of 3 Superpower Britannia Chinese Federation and E.U. Marik di Britannia and Lelouch vi Britannia are two young men were prince of the Britannia Imperial Family with clashing ideal with driven desire to change the world. Both of them received a mysterious power known as Geass from two mysterious individual and use that power to change the world.