After the Magic Sword Tournament, Anos and the other students visit Azeshion in the Human Realm for an educational exchange with the Hero Academy. While they individually explore the city, Anos heads to the Hero Academy saying that he wants to research something. The academy is off-limits to outsiders, but without hesitation, he tries to make his way inside. Eleanor Bianca, a third-year student at the Hero Academy, appears before Anos and says, "You’ll be safe as long as you’re with me" with a mischievous smile. She acts as Anos’ guide inside the academy.

Anos and the students from the Demon King Academy participate in their first day of inter-academy exchange with the Hero Academy. However, the students from the Demon King Academy soon find out that the inter-academy exchange is in name only, and they are met with outright hostility. Revest, a third-year student at the top of his class from the Demon King Academy is ridiculed by the students from the Hero Academy when he unsuccessfully tries to activate a magic spell. The students from the Demon King Academy are visibly offended by this treatment, but Anos’ words turn the tables. "As usual, humans sure like to set traps for us, don’t they?" The inter-academy exchange is off to an ominous start.

Anos und seine Klasse bekommen einen neuen Klassenlehrer zugeteilt. Es stellt sich heraus, dass er einer der Vier Finsterniskönige ist. Jedoch hat ihr neuer Klassenlehrer ganz andere Pläne, als die Klasse zu unterrichten.

Anos und seine Gefährten haben sich in den Untergrund geschlichen. Sie wollen zur Schatzkammer, um eine ganz bestimmte Waffe zu bekommen. In der Zwischenzeit suchen Avos' Lakaien bereits alles nach ihnen ab.

Anos und seine Untertanen sind aus der Vergangenheit zurück und wollen zum Gegenangriff übergehen. Avos wiederum hat die Weißkutten als Geiseln genommen und will sie hinrichten lassen. Sasha und Misha ziehen los, um das zu verhindern.