While watching over Lucy, Chise discovers her connection to Seth and their family's tragic history. While a professor seems to have been the victim of a user of a banned book, a mysterious killer seems to resurface...

Outside the College, the witches hunt for the missing book. Inside, the students try to juggle lessons with their own personal goals and relationships. Philomela confides in Alcyone, but an ominous message reminds her of her assignment.

Bored with having nothing to do but study, the students play a puzzle game, but it stirs up bad memories for Philomela and Rian. Alcyone ponders her assigned role. As the rainy season starts, Elias and Chise finally sit down to catch up.

Despite their disappointment that the College will be closed through Christmas, the students try and prepare for the holiday party. Chise takes another dive into Lucy's memories. Philomela reaches her breaking point.

Alycone reflects on Philomela's childhood and her all-important task. An ancient and fearsome goddess blocks Chise's path on the way to the Sargant family home and demands tribute that was promised a year ago.

While Zoe fights off the werewolf, the other students finally reach Philomela. Chise takes a dive into her dark memories, but as everyone's secrets begin to unravel, Philomela hesitates to take her classmates' outstretched hands.

The fight begins in earnest as Lizbeth starts to gain the upper hand, but Chise and company receive some unexpected assistance.

Philomela stands against Lizbeth in a final battle of wills.