A fresh, unexpected horse-kid series from an unexpected horse-kid herself, Kimberly Brubaker Bradley, award-winning and #1 New York Times-bestselling author of The War That Saved My Life and Fighting Words.

Harper's life has just exploded. Her parents are getting a divorce. And she suspects her best friend, Cat, may have known the reason for it long before she did. Now Harper and her mom are starting over in a cramped house, in a new town, where everything feels unfamiliar, including the riding barn next door. Harper's never been around horses before. And no, she does not want to learn to ride.

Then with no warning, a truck dumps a starved and neglected horse right in Harper's yard. She has no idea what to do with a live horse let alone a nearly dead one. But one look at the horse's huge eyes and his skinny body, and something inside Harper unlocks. The horse is named Phoenix, she decides. And she will not give up on him. Neither, it turns out, will Phoenix give up on her. She doesn't know it yet, but this is Harper's first step--toward new friends, new challenges, new adventures. Toward riding.