John Cusack plays Myrl Redding, a horse trader who locks horns with a rancher who has callously mistreated two of his horses, as well as their handler, a Crow Indian. When the law gives Myrl no justice, he is forced to take matters into his own hands, leading to a cycle of violence and chaos. The Jack Bull was written by Cusack's father, Dick, who also plays a small part as the jury foreman in the film. ~ Mark Deming, All Movie Guide