Marie who encountered a crown that should have broke down moves. Knowing that the crown was repaired is Naoto and offer cooperation to avoid purging in Kyoto. And while heading for the core tower, Mary noticed the existence of a masterpiece trying to kill herself ....

In order to save the people from the giant weapon, Naoto and Marie become terrorists and take over the Akihabara Grid. In the now empty city, the army clashes with the giant weapon while RyuZU faces off with her weaponized sister AnchoR...

In order to fix RyuZU and Halter who were rendered immobile due to the electromagnetic attack, Naoto and Marie head to the Ueno Grid to meet Konrad. There, Vermouth tells them the true aim of the Yatsukahagi. Will they be able to repair RyuZu and Halter in the limited time they have until the Yatsukahagi starts moving again?!

Along with Marie's old school friend, Houko Hoshinomiya, Naoto and the others observe the coup d'etat when they get a report that the Japanese government is going to use the Tall Wand against the Yatsukahagi. As the time draws close to the impact of the Tall Wand, Gennai, the mastermind behind the coup d'etat, fires the Yatsukahagi's main cannon. The two geniuses, Marie and Naoto, face a new challenge in order to stop Gennai's rampage.