Illya's fun summer break comes to a sudden end. The aftermath of their battle against the Heroic Spirit of the 8th Class Card disappeared overnight from Mt. Enzou.
One of Ainswoth's dolls, Beatrice, attacks Illya and the mysterious girl, Tanaka. Both are driven into a corner by her overwhelming strength. Just as they run out of options, someone calls Beatrice back, freeing them from their peril.
Thanks to sniping from Kuro, Illya's group managed to slip away from Beatrice and retreat from the Ainsworth mansion for the time being. Then they try to regroup at the school building Bazett and Kuro and have been using as their base.
Illya has been kidnapped and taken to the dungeon of the Ainsworths' mansion. Erica wants to grant Miyu's wish to be with Illya, so she swaps Illya's mind into a stuffed bear.
With Sapphire in hand, Illya transforms into a magical girl while still a stuffed bear. Her fierce battle with Rin and Luvia, whose minds have been replaced, leads them all to the bedroom occupied by Erica and Angelica.
While Illya is forced to face a fierce battle, Gil and Bazett appear out of hiding to overturn their disadvantages. At long last, Illya's reunion with Miyu draws close!
