Louie doesn't have the best luck when it comes to nurturing small creatures-not even lightning bugs, worms, or goldfish. So when his father brings home a sickly, newborn mini donkey, he's determined to save him. He names him Winslow. Taking care of him helps Louie feel closer to his brother, Gus, who is far, far away in the army. Everyone worries that Winslow won't survive, especially Louie's quirky new friend, Nora. But as Louie's bond with Winslow grows, surprising events prove that this fragile donkey-and Louie-are stronger than anyone could have imagined.