"When Cole moves in with his dad, Harp, he thinks life will be sweet--just him and his horse, Boo, hanging out with Philadelphia's urban cowboys. But when Harp says he has to get a job, Cole winds up as a stable hand for the polo team at George Washington Military Academy, where the players are rich, white, and stuck-up--all except Ruthie, the team's first and only girl, who's determined to show the others she can beat them at their own game. As Cole...