Based on a real-life assassin, who leaves a witness to testify against him, he must kill the witness before the syndicate gets him.

In the small Texas town of Rio Bravo, law and order is maintained by three unlikely enforcers: hard-boiled sheriff Chance; former quick draw artist Dude, now gone drunk and disheveled; and the crippled, wisecracking Stumpy, who patrols the jail with a shotgun. The arrest and incarceration of Joe Burdette for murder has set these three at odds with his brother, corrupt and wealthy landowner Nathan Burdette. Nathan assembles a force of hired guns to...