A discarded painting in a junk pile, a skeleton in an attic, and the greatest racehorse in American history: from these strands, a Pulitzer Prize winner braids a sweeping story of spirit, obsession, and injustice across American history. Kentucky, 1850. An enslaved groom named Jarret and a bay foal forge a bond of understanding that will carry the horse to record-setting victories across the South. When the nation erupts in civil war, an itinerant young artist who has made his name on paintings of the racehorse takes up arms for the Union. On a perilous night, he reunites with the stallion and his groom, very far from the glamor of any racetrack.