Few people know the truth about the bookstore on the outskirts of London that Elias frequents. He takes Chise there, where they meet Angelica, who teaches Chise a little bit of magic, but... The true power of the Sleigh Beggy materializes a fragment of Chise's memories.

The dog, with its flowing, black hair and burning red eyes, called Chise by the name "Isabelle." The Church's final request is to investigate a black dog that emerged in a cemetetry, but the black dog ends up saving Chise from danger. Meanwhile, Renfred's apprentice, Alice, is also on the move, looking for the black dog.

Elias and Chise attend Mariel’s coven meeting and meet Phyllis, Mariel’s high priestess. Secretly, Elias is given information that could help Chise. Following the meeting, Chise becomes suspicious of Elias' activities.

Elias earns the help of many, and they form a search party for Chise. Meanwhile, Chise and Cartaphilus relive his past together.