While Ichika battles Madoka's Black Knight IS, Tatenashi engages Squall atop a skyscraper. Meanwghile, Chifuyu and her students become trapped in a monorail containing a time bomb.
The IS class goes on a leisurely field trip with the girls vying for Ichika's attention. While leaving, the class is attacked at their various locations by Phantom Task.
The mysterious woman is revealed to be Arachne, and she's after Ichika's IS. A new enemy reveals itself, and it may be too powerful for the girls to handle.
Ichika had a prophetic dream involving all of the girls once again fighting an unstoppable foe. Later, Laura and Charlotte go clothes shopping in preparation for their date with Ichika…in which everyone is invited!