Since returning from the war with Hybern, Nesta has become even more standoffish, and her behavior has become increasingly self-destructive. In an attempt to help her sister, Feyre presents Nesta with an ultimatum: she can either change her daily routine and begin spending her time training with Cassian and working in the library under the House of Wind or she can face exile to the human realm. Knowing that life among the humans would equate to social ostracism, Nesta opts for the former option. Spending so much time with Cassian, however, has the potential to unearth feelings that she would rather forget, as well as awaken her powers. But the two of them working together might be the key to saving Prythian from the schemes of the mortal queens.