Mercy O'Brien has the life any horse-mad twelve-year-old would love. She lives on an Arabian horse farm in New Zealand. Mercy and her best friend Angela train endurance horses in the forest every day after school. Life would be just perfect, Mercy thinks, except for her father who has a thousand rules that Mercy can't follow. Then, mysterious things start to happen. First, they find a foal abandoned in the forest. It's up to them to try to save its life and find out who left it there and why? And what's the suspicious man who has just moved into the area REALLY up to? Things take a turn for...