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 father's 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.