The bus that is carrying the students to the Nine Schools Competition is attacked by unknown forces. Tatsuya suspects that it is the work of an insider. At the banquet before the competition, students meet Kudou, the chairman of the Magic Association.

Finally, the day has arrived for Monolith Code. Tatsuya and his teammates have a strategy against Cardinal George and the Crimson Prince. Miyuki is confident that her brother will be the winner. However, is there a bad surprise in store for First High?

Tatsuya has a feeling that an incident might occur during Mirage Bat. He assures Miyuki that he’ll protect her no matter what. Meanwhile, the No-Head Dragons decide to take even harsher actions to make sure that the Nine Schools Competition is called off.

First High School students celebrate their victories in the Nine Schools Competition. Enraged by the actions of No-Head Dragon, Tatsuya pays them a visit. Since Tatsuya is not a member of the Ten Master Clans, Jumonji has a very interesting offer for him.

The Yotsuba Family intervenes to eliminate all threats to Tatsuya from the USNA military forces. The only threat that remains are the parasites. After questioning Pixie about the remaining parasites, Tatsuya heads to Aoyama Cemetery with Miyuki and Honoka to lure them out.

Thanks to Pixie's psychic powers, Tatsuya and his friends are finally able to capture the parasites. They leave the scene after Erika and her team arrive, but a third faction disguised as the police appear before them and get in their way.

As instructed by Raymond, one of the Seven Sages, Tatsuya and his friends head to the outdoor training area behind First High School on the night of February 19th. Just as Raymond said, they detect the presence of all active parasites and Lina gathering at the scene. At this rate, clashing with Lina, who is hell-bent on completing her mission as Sirius, will be inevitable. With complex emotions at play, the final battle with the parasites begins.