Grim acquires a sold-out sandwich that Savanaclaw student Ruggie forces him to trade for something else against his will.
Crowley suggests retiring the housewarden of Diasomnia from an upcoming spelldrive tournament, but Savanaclaw Housewarden Leona is against it, joined by Pomefiore’s Housewarden Vil, who says he suspects Crowley of some kind of unconscious bias.
Students at the school are getting hurt. Crowley asks the prefect and Grim to investigate, promising them a place in the tournament if they succeed.
They join with Heartslabyul students and visit Jack from Savanaclaw, but the other students pick a fight and Leona suggests a friendly game of spelldrive, which Jack interrupts, saving the group from further punishment.
That night a student with horns goes to the prefect’s dorm, refusing to teach the prefect his name and suggesting that they choose a nickname, expressing disappointment that Ramshackle is no longer abandoned.
Jack confronts Leona who explains he is fighting for the dorm’s best interests, commenting on Jack sounding like his brother.
The prefect dreams.
Grim names the horned student Hornton. Realizing that Ruggie is causing the injuries at the school, the group confronts Ruggie but he runs away.
Jack teams up with Heartslabyul. Leona works with Octavinelle Dorm to secure a potion for Ruggie and Savanaclaw students praise Leona, but he says succession is not connected to ability and conquering the school will not fix the real world.
The prefect dreams.
Ruggie takes the potion from Leona to cause a stampede of people at the tournament.
He appears to take down Malleus, but Riddle and members of Diasomnia appear to reveal that Malleus is unhurt, as those injured in the stampede were clones made by Cater’s magic.
Leona gives up as they have no chance against Malleus, saying that he was humoring Ruggie and the other students when they talked about their dreams, calling Ruggie a hyena who grew up in a dump and himself a hated prince.
Leona’s unique magic dries out everything until it turns into sand, including Ruggie, who is saved by Jack and Riddle.
Lilia tells leona that he will never contend with a real king like Malleus, resulting in so much negative energy within Leona that he overblots.
In a flashback we see Leona feared for his magic in his own home and saying that everyone finds fault with him as a pretext to praise his brother, Falena, who can become king without effort.
Falena encourages Leona to find something else he can do but Leona refuses.
Leona regains consciousness and takes responsibility for the injured athletes, who ask that Savanaclaw be allowed to participate so that they can have their revenge.
Leona agrees. Crowley rewards Grim with an exhibition match during which the prefect is knocked unconscious so they do not see Diasomnia Dorm win the competition.
Leona’s nephew appears.
Grim eats a rock.
There is a shape in the prefect’s bedroom mirror.