High school is hard enough when you're healthy. When you've got some weird, undiagnosable chronic illness, it's a special hell. Meet Grace Turing. She loves art, weird trivia, and her little sister, Ivy. Grace has a secret. One that she's determined to keep at her new school, in a new state, where no one knows her as 'Sick Girl'. This is her chance to make friends and seem normal while her illness is still invisible. But is an invisible illness really invisible? How long can she keep a secret this big? And who else is she hurting by keeping her pain to herself?