17-year-old Mia exists in a chronic state of anxiety. The counselors at her last two schools had a word for it: hyper-vigilance. At Kazemoto Security Corp.’s Supernatural Division, the recruitment scouts have a word for it, too: potential.

Hemmed in by hard choices, tasked with an impossible purpose, Leaf--child of shadow and whisper, walker on the borders--must tread a path through peril and subjugation if she is to find freedom. But what will she become if she succeeds?