Long ago, the humans and cats of Ulthar, city of cats, were struck by a great tragedy. For generations, the souls of those who were at the center of this tragedy have been sealed away by the king of cats. Chise and Elias travel to Ulthar in order to complete Simon's second task: to purify the spirits that remain.

Chise is deep in thought as she watches the souls return to where they'd belonged all along. More than ten days have passed since the incident at Ulthar, but she is still in a deep sleep. Elias and Simon stand worriedly by her side, when they are met by two unexpected guests: Titania, Queen of Fairies, Lord of Tír na nÓg.