Jess has caught the horse lovers' bug, and it's bad. But on the good side, her friend Rosie offers to take Jess on a riding vacation! It's a dream come true. A week's free Pony Trek! A dream, that is, until Georgie starts having accident after accident out on the trail - and all fingers point to Jess as the culprit! Even Rosie's mind has been poisoned against her!