Milly Lockwood Groves is stuck at her parents' racing stables and stud farm outside Newmarket, and dreams of making it as a champion jockey. Her father is a millionaire racehorse breeder and bastion of the male dominated racing fraternity, and he's forbidden Milly to ride, after a bad fall left her hospitalised as a child. Instead, her parents devote their energy to supporting Milly's poisonous elder brother, Jasper. Although Milly has more talent in her left riding boot than Jasper will ever have, her family don't see racing as an appropriate career for a girl, and Milly's life consists of Prue Leith cookery courses and debs' balls in London. But Milly's life is about to be changed by the arrival of Bobby Cameron, the most skilled horse-breaker in America. Milly, who previously has had no interest in males of the two-legged variety, develops a passionate crush on the blond, beautiful Bobby. When Bobby offers her the chance to spend a year on his Californian ranch, it's just too good an opportunity to refuse ...