When a new show horse runs off, the saddle clubbers go on a search that leads them to the horse's mystery owner, dressage champion Dorothée, who's permanently retired after a riding injury. Can the girls help Dorothée get back in the saddle again? Join Carole (Keenan Macwilliam), Stevie (Sophie Bennett) and Lisa (Lara Jean Marshall) as they teach their new instructor some important lessons about life -- and horses, of course!