Presents a novel that is based on a true story that confronts America's history of racism. In 1850 Kentucky, enslaved groom Jarret cares for and trains a horse, Lexington, that becomes a champion. A painting of Jarret and the horse is done but it's lost in the Civil War. Then in 1954 New York City, gallery owner Martha Jackson becomes obsessed with a nineteenth-century equestrian oil painting. Finally, in 2019 Washington, DC, Jess, a Smithsonian scientist from Australia, and Theo, a Black graduate student at Georgetown, find the painting and set out to learn the story of the Black horsemen and restore the painting.