Lucy's visitor reveals more of the history behind the Webster tragedy, but two mysterious figures show up and attempt to finish the job. Elias continues to investigate why people are collapsing around the College.
Elias continues to investigate what is sapping magic from Lucy and Simeon. Chise gets a lecture from Hazel on her lack of self-preservation, and the students volunteer to do some gathering at the waste tower as Hallowe'en arrives.
The students find the waste tower is equally full of mysteries and danger. Alice confronts Renfred once more, and Seth and Lucy try to reconcile their past. Lizbeth's message to the College is met with a cold response from Principal Quillyn.
The College is sealed off to protect the students and staff from whatever or whoever has been sapping magic from victims. Zaccheroni puts the students' survival abilities to the test, but with a catch: no sorcery allowed.
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.
Violet and Chise host an after hours test of courage for their classmates by having them pair up to visit various haunted locations around campus, but the evening leads to some revealing conversations.
The mystery deepens as all the students drained of magic suddenly wake up feeling fine. Rumors about the culprit start to rise among the student body. Veronica checks in on Philomela.
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.
Philomela bargains for Liza to undo the seal over the College so she can return home to fulfill her duty. As Chise gives chase, her power gives her a terrifying new form.
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.
With the contents of the Grimoire fully revealed, it is up to Chise and her friends to stop what is set to come from it. A mysterious curse comes to exercise punishment.
