「コードギアス 反逆のルルーシュ R2」の第1話から第25話までを総括した特別編集版。皇暦2018年。謎の少女C.C.から手に入れた絶対遵守の力「ギアス」を使い、ゼロは再びの抗いを決意する。植民地エリア11となった日本から始まるこの漣が、時代にそして人々の心に何を残すのか今はまだ誰も知らない…。
It is the year 2017, and Europia's being invaded by the Britannian Empire. In an attempt to combat the massive casualties, army forms a special unit Wyvern, made of former Japanese citizens, Elevens, recruited to pilot Knightmare frames into deadly operations. Among those selected is Lieutenant Akito Hyuuga, known as Hannibal's Ghost due to his prowess on the battlefield.
The war between Euro Britannia and the European Union continues. New orders are given to the W-0 Unit. To land in the middle of the enemy territory as a diversion. The pilots of the W-0 Unit consist only of the commanding officer, Leila, the only surviving Japanese from their last battle, Akito, and the three that escaped from the Eleven ghettos and lived in the underworld, Ryou, Yukiya, and Ayano. With everyone holding their respective expectations, the operation moves forward. On the other side in Euro Britannia, Shin, who made his benefactor commit suicide with the mysterious power of “Geass”, is appointed the leader of the Knights of St. Michael. As Shin steadily advances for the sake of his own ambition, he and his subordinates in the Ashura squad are given orders to deploy. The one that lives in order to fight, and the one that fights in order to live.
After discovering the face of their true enemy, someone who is related to Akito and responsible for the Geass placed upon him, W-0 attempts to return to their base at Castle Weisswolf. However, stranded in Warsaw due to a complication involving their military identification, they are forced to accept the help of local gypsies, allowing the squad to take some time to deepen their bonds. Meanwhile, Britannian advisor Julius Kingsley and his guard Suzaku Kururugi begin working together with the Knights of St. Michael in order to crush the European resistance once and for all, armed with the destructive power of a giant weapon known as the Ark Fleet.
While W-0 is away, Leila and the remaining crew at base find themselves surrounded by Britannian Knightmares. Piloting the Vercingetorix, Shin Hyuuga leads the enemy charge, having usurped the position of Grand Master in the Knights of St. Michael. With her core members unavailable, it's up to Leila to protect her comrades, but this may be much tougher than she realizes: a spy lurking among them is finally ready to reveal himself. Left with no choice but to surrender, Leila arranges a meeting with Shin in order to ensure the safety of her squad. But as negotiations begin to fall apart, Akito and an unexpected ally return in the nick of time to turn things around.
The Ark Fleet has been destroyed, and a significant number of the enemy's troops have been wiped out due to its crash landing. As the remaining forces of the Holy Order of Michael regroup in order to launch a final assault on Weiswolf Castle, the wZERO unit, along with their new ally Ashley Ashra, stand ready to intercept them. Meanwhile, with his Geass out of control, Shin moves to erase his younger brother's existence once and for all. But Akito, having promised Leila that he will come back alive, refuses to accept such a fate, and the two clash in their final battle.
On a bright, peaceful day, siblings Nunnally and Lelouch Lamperouge take a moment to relax under a tree. When Nunnally asks him to tell her a story, Lelouch, who is unflinchingly resolute in doing his utmost for his sister, makes unique use of his Geass ability, breaking barriers to tell the most entertaining story he can. Awakening alone under the tree, the previously blind Nunnally finds that she can see again and immediately spots a strange rabbit that resembles Anya Alstreim, the Knight of Six. The sight of this rabbit sends Nunnally falling down a hole, leading her to a colorful wonderland. Narrated by Lelouch himself, Code Geass: Hangyaku no Lelouch - Nunnally in Wonderland follows the lost Nunnally as she searches for a way back home, meeting a slew of colorful, familiar characters along the way.
2006～08年に計2シーズンが放送された人気アニメ「コードギアス 反逆のルルーシュ」を再構築した劇場版3部作の完結編。全50話のテレビアニメを再編集し、新作カットを加えて全編新規アフレコを行った。世界支配をもくろむ巨大帝国ブリタニアと、ブリタニアに反旗を翻す黒の騎士団がついに激突する。それは、黒の騎士団を率いる仮面の男ゼロ＝ルルーシュの思惑通りだったが、妹ナナリーの存在がルルーシュの計算を狂わせていく。一方、ブリタニアの第2皇子シュナイゼルが黒の騎士団に接触。ゼロの秘密を明かし、黒の騎士団の統制を内部から揺るがせようとしていた。そうして戦いは激化していき、あらゆる人々の怒りや悲しみ、執着や願いも飲み込んでいくが……。
世界は再編成された超合集国を中心にまとまり、平和な日々を謳歌していた。 しかし、平和は突如として終わりを告げる。仮面の男・ゼロとして、ナナリーの難民キャンプ慰問に同行したスザクが謎のナイトメアフレームに敗れ、 2人は連れ去られてしまった。 シュナイゼルの密命を受け、戦士の国・ジルクスタン王国に潜入したカレン、ロイド、咲世子はそこで、謎のギアスユーザーに襲われる。 そして、その場には襲撃者に“元嚮主様”と呼ばれる、C.C.が居た。 かつて神聖ブリタニア帝国の大軍すらも打ち破った無敵の王国を舞台に、人々が描く願いは、希望か絶望か。 果たして、ギアスのことを知るジルクスタン王宮の面々と、C.C.の思惑とは——。