Based on the Novel Secretariat: The Making of a Champion By William Nack, Secretariat chronicles the spectacular journey of the 1973 Triple Crown winner. Housewife and mother Penny Chenery agrees to take over her ailing fathers Virginia-based Meadow Stables, despite her lack of horse-racing knowledge. Against all odds, Chenery — with the help of veteran trainer Lucien Laurin — manages to navigate the male-dominated business, ultimately fostering the first Triple Crown winner in 25 years and what may be the greatest racehorse of all time.