As the only hedgewitch in Blackthorn, Massachusetts, Aziza El-Amin has bargained with wood nymphs, rescued palm-sized fairies from house cats, banished flesh-eating shadows from the local park. But when a dark entity awakens in the nearby forest, eroding fairyland's boundary, run-of-the-mill fae mischief turns into outright aggression, and the danger becomes too great for her to handle alone. She is forced to seek help from two unlikely allies: Leo, a boy who was cursed to forget his true love and isn't afraid to risk his life looking for answers; and Tristan, a mysterious young necromancer she's not certain she can trust. They'll have to work together to eradicate the new threat and take back their hometown... even if it forces them to uncover deeply buried secrets and make devastating sacrifices.