Following the death of Emperor Lelouch vi Britannia and the dissolution of the Holy Britannian Empire, remnants of the old empire captured the island of Hokkaido and founded the Neo-Britannian Empire, where the Japanese people are oppressed just like the old days of the empire when their country was one of its colonies. Two brothers named Ash and Rozé, dubbed "The Nameless Mercenaries" fight the Neo-Britannian empire, eventually joining forces with the local resistance forces in their mission to rescue princess Sakuya Sumeragi, but only a few know that Rozé is actually Sakuya in disguise, and the person she wants to rescue is her childhood friend and body double Sakura Haruyanagininomiya, who is passing as Sakuya to protect her. Her weapons are Ash's piloting skills, her tactical prowess and the power of Geass, which forces anyone into absolute obedience, the same power Lelouch himself once used in his rise into power.