In Dorset in 1740, after her father brings home a mysterious and defiant stallion, fifteen-year-old Helena is desperate to keep the horse for her own. Everything in Helena's life is in perfect order. The daughter of magistrate Lord Roseby, she has a comfortable home on a grand estate, and with the help of her best friend, Jamie the stable boy, she is able to secretly ride her father's powerful horses -- without the confines of a sidesaddle. Then, suddenly, everything changes. Dangerous smugglers are on the loose in Helena's quiet village. And Helena's father brings home a mysterious and beautiful new stallion. Helena's world is suddenly turned upside down, and becomes more exciting than she ever could have imagined.