Riddle's magic and emotions begin to rampage, leaving the Heartslabyul students frozen in fear of his immense power. As Headmage Crowley realizes the danger of the situation, he orders the entire school to evacuate. However, Ace, Deuce, Yu, and Grim refuse. Instead of heading to safety, they are determined to face Riddle and his raging magic despite knowing they are no match for him.

Ace and Deuce's duel with Riddle becomes the catalyst that unleashes all the dissatisfaction of the other Heartslabyul residents. However, the unexpected backlash shocks Riddle so deeply that he begins to undergo an ominous change.

Ace seizes his chance to remove his collar, but even the best laid plans can go awry.

A surprise late-night visit by Ace leads to an unexpected encounter at Heartslabyul House.

Ace and Deuce must find a magestone, or they will be expelled from school.

As Yu adjusts to his new life, he befriends two students: Ace and Deuce.

Yu is summoned to the magical world of Twisted Wonderland and finds himself facing a monster.