The Night Court members travel to the Mortal Realm to negotiate with the human queens for their half of the Book of Breathings, a powerful artifact needed to stop the King of Hybern. The negotiations took place at Feyre's family home, where her sisters were living at the time. The meeting ultimately went poorly, and the queens, distrustful of the Fae, refused to hand over their half of the book and later even exposed the Night Court's secrets to the King of Hybern.