Hidden off the coast of Washington, veiled in mist, there is an island that does not appear on any map. And on that island is Ellery West.

Ellery West has always been home for Faith. After an international move and a childhood spent adjusting to a new culture and a new language, the acclaimed school for magic feels like the only place she can be herself. That is, until Faith and another student walk into the forest, and only Faith walks out.

Marked with the red stripe across her uniform that designates all students deemed too dangerous to attend regular classes, Faith becomes a social pariah, an exile of Ellery West. But all she has to do is keep her head down for one more year to graduate, and she gets to keep her magic. Because when students fail out of Ellery West, they have their magic taken away. Forever. And Faith can't let that happen.

Except terrifying things are still happening to students, and the dark magic that was unleashed in the forest still seems to be at work. To stop it, Faith and the other Red Stripes will have to work together, risking expulsion from the magical world altogether.