With the first boarders arriving, Rosie is realizing that helping to run the family stable is more difficult than she originally thought. The extra horses and work aren't the problem though; it's one of the boarders that Rosie can't get along with. When Grandma explains 1 Samuel 16:7 to the girls, Rosie struggles to see how the verse applies. It takes that annoying boarder, a special horse, and an extreme race to teach Rosie that while man looks at outward appearances, God looks at the heart.
