Code Geass: Lelouch of the Resurrection

It is the second year of the Kowa Period. The world has unified around the reorganize United Federation of Nations, and has enjoyed days of continuing peace. But now, that peace suddenly comes to an end. Suzaku, while travelling as the masked man “Zero” accompanying Nunnally on her visit to the refugee camp, is defeated by a mysterious Knightmare Frame, and the two of them are taken away.