Meet 12 year-old Margaret Worms: head detective of the mystery club Girls Can Solve Anything. But in high school, the club has disbanded, and Margaret in unmoored, not wanting to grow up. She develops an eating disorder and goes to a treatment centre. There, Margaret's recovery is complicated by a string of mysteries involving a ghost, a hidden passage, disturbing desires, and her own vexed relationship with herself. A reimagining of nineties adolescence - mashing up girl group series, choose-your-own-adventures, and chronicles of anorexia - in a queer and trans coming-of-age tale like no other.