In 1909, amidst the dying old west, Willie Boy, a long distance Desert Runner by Chemehuevi tradition, falls in love with young native beauty, Carlota. Carlota's father, a Chemehuevi shaman and local tribal leader, refuses to let the young couple be together. In a fatal confrontation, Carlota's father falls dead to an accidental gun shot and the young lovers flee to the sun enslaved Mohave desert. The local sheriff leads a mounted posse armed with fire power and two Native American trackers seeking justice for their "murdered" tribal leader. Willie Boy and Carlota evade capture outlasting the men and their horses. However, fake news stories meant to sell papers adds to the mounting pressure to capture Willie Boy. In a desert that purifies all, the search for Willie Boy forces everyone to face their own demons in this tragic tale of love, death, and desert heat.
八公（Forest 饰）是一条谜一样的犬，因为没有人知道它从哪里来。教授帕克（理查·基尔 Richard Gere 饰）在小镇的火车站拣到一只走失的小狗，冥冥中似乎注定小狗和帕克教授有着某种缘分，帕克一抱起这只小狗就再也放不下来，最终，帕克对小狗八公的疼爱感化了起初极力反对养狗的妻子卡特（琼·艾伦 Joan Allen 饰）。八公在帕克的呵护下慢慢长大，帕克上班时八公会一直把他送到车站，下班时八公也会早早便爬在车站等候，八公的忠诚让小镇的人家对它更加疼爱。有一天，八公在帕克要上班时表现异常，居然玩起了以往
