The verdant pastures of the Karlson farm in Illinois have the placid charm of a landscape painting, but the horses that graze there have become the consuming obsession of a woman who sees in them the ultimate fulfilment of her every wish - to win, to be honoured, to be the best. Her vaulting ambition becomes a tragically destructive force; a force that will drive a wedge between her and her family, and have unforeseen and brutal consequences for them all...