When Madeleine Kensley enrolls in St. Agatha Christiana's Academy for Girls, she thinks she'll finally get some peace from the oppressive symptoms of Guyphobia, a condition she's been struggling with for a year and a half. But wouldn't you know it, her new roommate (who's supposed to be a girl) somehow manages to bring out the worst of it. However, Madeleine starts to realize her roommate may be the least of her problems- trouble is stirring, girls are attacked one after another, and disaster seems to strike way more often than it's supposed to, even in high school. But nothing is really how it's supposed to be at St. Agatha's, and Madeleine thinks the answer to fixing everything lies in a secret she found in its very depths: a series of heart-wrenching letters written by the school's founder to the mysterious Julia, also referred to as the Hidden Rose...