Nola James can handle it. She can handle that her father is dead. She can handle that her friends, bored with her grief, left her behind. Nola James can handle it because she has to. Lumi―the love of her life and a faery changeling―is in danger. Not only is Lumi's human mother trying to kill her, but she's being hunted by veiled monsters that want to return her to the fae. Hiding out together in an abandoned cabin with only a skeleton rabbit for company is miserable, but Nola can handle that too. And she does.

Until Lumi is abducted.

In order to save her, Nola must enter the faery realm: a world at the bottom of a lake in which eyeless horses parade as brides, ghost-bees produce transformative honey, and skeletons dance in skin-colored cloaks. Aided by a witch-girl with uncertain motives, Nola uncovers the realm's terrifying power over changelings. Unless Nola can outplay an abyssal faery queen and find the courage to let the world see her own pain, Lumi will be trapped in faeryland forever.