Moving to England should be enough of a challenge for American teenager Kit, but things get even tougher because of the new school she's attending there, elite equestrian boarding school Covington Academy, where her father has gotten a new job. Being at an equestrian school means Kit is going to have to get used to riding horses, which is an issue because she has a phobia of horseback riding. As she tries to figure out her place in the new environment, Kit finds an unexpected friend -- TK, the school's wildest and most stubborn horse.