Minna is growing up and has a wonderful assortment of oddball friends and relatives, blithe spirits all, who sometimes seem to her to move through the world with more ease and confidence than she can muster. Her brother, McGrew, loves lurid headlines, and sings most of the time, much to the annoyance of his teachers. His best friend is Emily Parmalee, the catcher on his baseball team, who likes to wear feather earrings.
Minna loves Mozart and the cello, and in her music class is a boy named Lucas, who has a vibrato, collects frogs, and has, so she thinks, the perfect family. Her mother is a writer who believes that "fact and fiction are different truths." She has a music teacher named Porch (called by McGrew "Old Back") who calls the chamber group "mass assembled sound". In this book even the taxi driver can end up fixing the kitchen sink and demonstrating a new way to make coffee.