A lone rider stops at the border, preparing to return to the United States for the first time in three years. When he left for Mexico, the Rio Kid was eighteen, a terrified youngster fleeing a fraudulent murder charge. He returns a grown man, with blood on his hands and twin .45s on his hips. His destination is a small town in Arizona, where he plans to clear his name and reclaim his legacy. But there is a lot of trail between here and there. Wanted signs paper every border town, offering $10,000 for the Rio Kid-dead or alive. At his first stop on the journey home, the Kid is mistaken for a hired assassin and a Texas Ranger.