Terra, Aqua and the pope is having a conversation outside. They decide to use their believers to attack Academy City.
Yomikawa along with her co-workers from Anti Skill are at 3rd district demonstrating their equipment to people from outside. There were times where Academy City would invite people with interest to show their inventions, but this time it's strictly weapons and arsenals only. She speculates that this was due to protest going on around the world. Roman Catholics are protesting against Academy City world wide, and the demonstration they're having right now is aimed at showing what Academy City is capable of.
Touma, Tsuchimikado and Blue hair was having a conversation as well on which color suits the bunny girl the best. (black, red or white?) Fukiyose tries to shut them up by choking Tsuchimikado, kicking Blue hair and headbutting Touma. Oyafune, a teacher working at their school, hears the commotion and breaks up the fight. She orders them to pick the weed away by hand from school ground after school. The two ditch them, and Touma is left alone to work with Fukiyose. While working they start playing around again, Fukiyose trying to show her 150km/h fork ball against Touma (thus the fanservice). Touma almost gets into trouble again after foul ball hits Oyafune who came to check up on them, but manage to escape.
Stiyl and Anise are interrogating Viaggio and Ludovia, trying to find out what God's Right Seat is after. Ludovia smirks and tell them that what they're after is stated in their name.
Touma meets Misaka on the way home. They talk about how he got her mom's number and why there's protest against Academy City going on around the globe. After they split Touma is contacted by Oyafune's mother, who happens to be one of Academy City's higher up in person. She tells him that there's supernatural power at work behind the protests, that these people are forced to take action against the city. She asks for his help but is shot by Tsuchimikado right after. Academy City wanted a reason to go on war so what she was doing would only work against them. Tsuchimikado was asked by her to shoot her to prevent Academy City from doing further form of punishment (such as attacking her daughter). Misaka hears the shot and comes back, but they've already left after calling for help.
They get on super plane that can go up to 7000km/h to head to France. Tsuchimikado tells Touma they're after Document of Constantine. It has power to make catholic people believe whatever the pope says. In this case pope said something like Academy City is evil, and people started going on a rampage. Before Tsuchimikado could finish his explanation, they reach above Avignon, so they jump off. Touma makes a vow to kill Tsuchimikado if he gets a chance.
Touma lands on a river, but Itsuwa rescues him before drowning. Amakusas were gathering info in France on what was causing this, and Itsuwa found Touma by pure chance since she didn't know about Tsuchimikado. They join up before regrouping with him. They go to nearby cafe to wrap things up before making a move. Itsuwa explains how popes used to be here at Avignon couple centuries ago, and since using the document in Vatican would take long time (taking votes and approvals), they decided to use it here instead. Palais des papes seems most likely place to be where the document is housed.
They're spotted by angry mob before they could plan things out. This seems to be their attack against Touma, after spotting him drop off from the plane. They start moving toward Palais des papes. while dodging the mob to get there, Tsuchimikado contacts them. He was heading there as well, but wall of angry mob got too dense to pass by. They decide to cut the magical pipeline connecting Vatican and Avignon which allows the document to activate instead. This pipeline is flow of energy that runs through the globe, and they need either Itsuwa or Tsuchimikado to alter its path away from Avignon.
Touma and Itsuwa end up at one of museums. Just as Itsuwa is about to shut the pipeline with her panties, Terra attacks them with giant white guillotine blade. When Touma touches it the blade shatters into pieces, but goes back to Terra's right hand and forms a blade once again. Terra mentions that since God's Right Seat can't use normal magic he has to let someone else use the document, so he hopes that they'll entertain him a little. Terra starts attacking again. Touma block most of his attacks and Itsuwa jumps in, using seven wires to attack like kanzaki. The wires wrap around him without any damage. Terra goes through wall behind him and attacks, and the two can't do anything but to defend themselves.
Terra is disappointed in Touma, saying that Vent would never have lost against him if her punishment wasn't broken and fallen angel wore out. Terra strikes with his blade and Touma is blown away but his body remain intact instead of getting sliced in half. Itsuwa figures out that Terra's blade is made of flour and once she does Terra explains with a smile that he can alter the rank of things. He put himself above the metal wires so it didn't deal any damage to him. Tsuchimikado joins in and attacks Terra with his magical origami while sending a note to Itsuwa and Touma to get away when the two collide. Before they do there's huge explosion outside, crumbling the museum wall. Academy City sent their army to attack Avignon.
Dozens of them with powered suits start taking down the mob. Terra retreats in order to secure the Document of Constantine and escape because that's what the Academy City is here for. Touma and Itsuwa goes after Terra while Tsuchimikado stays behind to stall the Academy City. Tsuchimikado manages to crash the suits' system, thanks to the suits still being at testing stage. He spots HsB-02 flying above him and questions now immobilized soldiers if they plan to bomb entire city of Avignon, and wonders if they got something more. The HsB-02 planes slices around Avignon using its earth blade, and Accelerator tells them to bomb just the Palais des papes instead of bombing whole Avignon.
Touma and Itsuwa reaches Palais des papes, once there he calls Misaka to check on why Academy City sent their people in. She tells him that right now there's nothing but news on Avignon on TV. There's cult group working to create weapon of mass destruction and French government has asked Academy City to intervene, asking for their expertise in taking the weapon apart. She asks Touma where he is but their talk is cut short when Terra shows up after taking out suits that have infiltrated into palace, with the document in his hand.
Bombing starts and with that Touma begins his fight against Terra with Itsuwa. Terra explodes his blade and shoots them out like a bullet at them. Touma is unable to react but Istuwa pulls him away just in time and strikes at Terra. Itsuwa gets injured instead and Terra scoffs at her for being dead weight but she answers to him that she's found his weakness. Before she could speak Terra attacks and knock her unconscious. Terra tells Touma how he's utterly disappointed and that his could have protected her if he had full power of Imagine Breaker. Finding confused look in Touma, Terra asks "how can you not know it? or is it possible that you've forgotten?" Touma screams in anger and that confirms Terra's suspicion, asking when and how he lost his memory. Terra starts attacking again saying it won't matter since he's going to die here anyway.
With this attack Touma realizes his weakness; Terra can't change more than one rank at a time. If he puts human being above a weapon, his blade isn't deadly for time being unless he puts flour above a person, and on top of that he has to actually say it out loud every time he does. Touma asks why go this far, and Terra's answer is that he needs to guide lost sheep and judge them before passing onto promised land. After that Touma gives his usual speech, pummels Terra to ground and destroys the document. With the document destroyed and Terra lying on ground, Touma asks him what Imagine Breaker is. Before Terra could speak attack from HsB-02 blows the two away and where Terra was laying is covered in scorching flame.
When Itsuwa comes to, she finds Touma unconscious and damages caused by HsB-02. Parts of room has melted due to so much heat and covered with steam. She hears Accel speaking just as she start tending Touma, from where heat is still generated where no normal human being should be able to stand. She stays put not knowing if he's ally or foe, steam giving good cover for her and Accel leaves soon after to deeper part of palace.
Ludovia tells Stiyl that God's Right Seat is trying to become being equal to an angel and even more, sitting right next to where god resides. Terra manage to survive the attack and escape to Vatican, where he's welcomed by Aqua and is sliced in half. Aqua found out that Terra was experimenting his power on non Catholics who pass by Vatican. He heads off to Academy City to stop what's causing the chaos.
Misaka is staring blankly at her phone after hearing the talk between Touma and Terra, and volume ends.
credit:bob4000