Living in the family car in their small North Carolina town after their father leaves them virtually penniless, Georgina, desperate to improve their situation and unwilling to accept her overworked mother's calls for patience, persuades her younger brother to help her in an elaborate scheme to get money by stealing a dog and then claiming the reward that the owners are bound to offer.

Penny Rooney has cystic fibrosis, which means she has to do breathing treatments to help her lungs work. Some days, it seems like her CF is the only thing Penny knows about herself for sure. From her point of view, everyone around her can make sense of their place in the world. So why can't Penny even begin to write a poem about herself for school? Then during spring break Penny spots something impossible in the creek behind her house: a dolphin,...