Toma sigue intentando llevar una vida más o menos corriente para su edad, pero por mucho que se lo proponga, su poder sigue siendo un codiciado elemento para muchos.

Touma viaja hasta Aviñón, Francia, para investigar desde cerca qué es el Documento C y qué es lo que quiere Asiento Derecho de Dios.

En la ciudad francesa de Aviñón tendrá lugar el enfrentamiento de Touma y Terra por la posesión del Documento C.

La acción vuelve a situarse en Ciudad Academia. Allí veremos que School ha dado comienzo a un sucio plan que pretenderá atrapar desprevenidos a todos.

Las varias organizaciones clandestinas de Ciudad Academia comienzan a actuar con un objetivo similar: llegar hasta Aleister. BLOCK pretende chantajear a Musujime para utilizarla y atacan el reformatorio donde están sus viejos compañeros mientras los de MEMBER parecen intervenir en todo conflicto sin un objetivo tan claro.

Teitoku Kakine va por Takitsubo, pero Hamazura no está dispuesto a ser un don nadie. Mientras tanto Last Order busca a Accelerator, pero alguien la busca a ella para poder llegar al más poderoso esper de Ciudad Academia.

Touma sigue ganándose enemigos gracias a sus acciones y a su poder, en este caso es Acqua quien ha decidido ir con todo para pulverizarlo. Por suerte, cuenta con Itsuwa para protegerlo.

Itsuwa está destrozada por la pérdida, pero finalmente le hacen saber que tiene que hacer frente a su enemigo y seguir adelante con su misión.

Tiene lugar un combate a muerte entre la Santa de la Iglesia Amakusa y Acqua de la Retaguardia.

Touma e Index tienen que viajar a Inglaterra cuanto antes, pero en el mismo viaje ya les esperan los sobresaltos.

Touma e Index finalmente llegan a Inglaterra tras un viaje con bastantes problemas. Allí los informan de un problema que está empezando a ver la luz dentro del país.

La situación en Inglaterra se complica de forma súbita en cuanto Carissa se apodera de la espada Curtana e inicia un ataque masivo.

Acqua and Knight Leader continue their fateful showdown in the forest. Princess Carissa reveals a devastating new technique using Curtana Original. When Kamijo and Index's lives are endangered, an unexpected ally comes to their rescue.

Kamijo, Kanzaki, Index, and Vilian head toward Buckingham Palace to stop Carissa. The palace is bombarded from the floating fortress Coven Compass, and others join the battle when Carissa calls in her own cruise missile strike.

Accelerator and the other members of GROUP are assigned to eliminate the members of Spark Signal, a terrorist group which has taken hostages. Hamazura and Kinuhata find themselves on the run when they defy the city's higher-ups.

Hamazura desperately tries to rescue Takitsubo when the building she is in falls under terrorist attack. Stephanie hunts down Kinuhata to exact revenge for Sunazara. Accelerator seeks out assistance from an unlikely benefactor.

Técpatl and Unabara square off in Shiokishi's chambers, while Accelerator and Sugitani face each other in the hallway outside. Kinuhata discovers the true reason for the current assault against herself, Takitsubo, and Hamazura.

Tensions escalate as Russia threatens military action against Academy City, while French sorcerers storm the English Channel. Kamijo and Lessar's search for Sasha Kruezhev leads them to the Elizalina Alliance of Independent Nations.

After dealing with the sorcerers at the Russian airbase, Accelerator has a Misaka clone skydive down to confront him. Vento challenges Fiamma while Kamijo and the others watch on. Hamazura gets some disturbing news from Digurv.

Kamijo begins second-guessing himself after Fiamma's rebuke. Hamazura fights to protect the village from privateers. The fighting between Britain and France ramps up. Accelerator lashes out at Kamijo over Last Order's condition.

Accelerator begins finding clues about the parchment he is carrying. Hamazura and Digurv find an unexpected ally in Acqua. Takitsubo receives some welcome news from Elizalina. Kamijo and Lessar attempt to infiltrate Fiamma's base.

Kamijo runs into Sasha Kruezhev, and he continues to formulate a plan to stop Fiamma. Hamazura and Takitsubo discover an imminent threat to Digurv's village. The archangel Gabriel rains havoc upon the Russian and Academy City forces.

As Kamijo and Sasha look on, Hyoka rushes in to stop the archangel's rampage. Accelerator joins the battle as well, with a newfound purpose. Acqua has his own strategy to weaken the archangel's power, though at great cost to himself.

Kazakiri advises Accelerator about the song Index once sang to treat Last Order. Hamazura has a surprise encounter. Lessar offers a proposition to Sasha. The long-awaited showdown between Kamijo and Fiamma takes a drastic turn.

Hamazura must defend the members of ITEM against a new threat from Academy City. Accelerator acquires the final piece of the puzzle to a cure for Last Order. The showdown between Fiamma and Kamijo becomes even more intense.

An overjoyed Accelerator gains a new perspective on the world. The duel between Kamijo and Fiamma concludes, and the doomed Star of B'Tselem begins its crash landing. The ITEM members are tracked down by an old acquaintance.