Feisty middle-grader Mary Margaret rides the range in this latest adventure. Mary Margaret can't wait to go the Lazy K dude ranch. She'll finally get a pair cowboy boots, and get to ride a real horse! But things don't go exactly as planned. She can't get her horse to cooperate, and Kansas, the riding instructor, won't let her out of the kiddie corral until she does. Kansas is one of the coolest people that Mary Margaret has ever seen, and she's determined to win her over. But when her determination goes too far, Mary Margaret has to find a way out of trouble, and back into the saddle.