Katherine “Kat” Cornish is a 14-year-old Catholic prodigy at Bramford Academy: tiny, anxious, painfully polite, autistic, and obsessively rule-following. A musical genius on piano, violin, and voice, she’s top of every class, fiercely vegan, and terrified of sin. Strict parents, chronic back pain, secret SoundCloud hymns, and a dormant witch gift shape her snowbound, lonely, carefully organized life. She clings to rosaries and routines, dreaming of gentler rules, real friends and somewhere safe.