Seventh-grader Wills is head-over-hoof for horses, and she is beyond excited when she gets the chance to start training at the prestigious Oakwood Riding Academy. But Amara, the Queen of the #HorseGirls, and her posse aren't going to let the certifiably dork-tagious Wills trot her way into their riding club so easily. Between learning the reins of horse riding, dealing with her Air Force pilot mom being stationed thousands of miles from home, and keeping it together in front of (gasp!) Horse Boys, Wills will learn that becoming a part of #HorseGirlWorld isn't easy. But with her horse, Clyde, at her side, it sure will be fun!