Dolores Mendoza is not thriving. She was recently diagnosed with a chronic bladder condition called interstitial cystitis. The painful disease isn't life threatening, but it is threatening to ruin her life. Just when things seem hopeless, Dolores meets someone poised to change her fate. Terpsichore Berkenbosch-Jones is glamorous, autistic, and homeschooled against her will by her overprotective mother. After a rocky start, the girls form a tentative partnership. Beautiful, talented Terpsichore will help Dolores win back her ex-best friend, Shae. And Dolores will convince Terpsichore's mom that her daughter has the social skills to survive public school. It seems like a foolproof plan, but Dolores isn't always a reliable narrator, and her choices may put her in danger of committing an unforgivable betrayal.