In 1969, Denver housewife and mother Penny Chenery (Diane Lane) agrees to take over her ailing father, Christopher Chenery's Meadow Stables in Doswell, Virginia, despite her lack of horse-racing knowledge. With the help of veteran trainer Lucien Laurin (Malkovich), Chenery navigates the male-dominated business, ultimately fostering the first Triple Crown winner Citation (horse) and one of the greatest racehorses of all time.