In a world where every child has a “brain defect”—a “cognitive disease” that can be mild—those with the severe version called Grimm-Cross Syndrome are trapped at Wildsmoor Facility. For 15-year-old Emily Emerson, who presents white, and the others at Wildsmoor, which is run by the evil Matron (who’s also the only fat character), the Grimm is dangerous, rendering them capable of causing earthquakes, breaking bones using only their minds, and worse.