The bank of Red Valley, a small town in Utah, is robbed by a gang and three residents are murdered during the heist. However the corrupt banker Stanley Clanton has plotted the heist with the owner of the local stable, Uncle Willie McLeod, and the rancher Jack Lester and his gang. Sheriff Steve Upton is out of town investigating the holdup and is surprised by the wanted outlaw Cheyenne Rogers. The gunman that was hired by Stanley but arrived late for the heist, steals his horse and heads to Red Valley. In the stable, the daughter of Uncle Willie, Allison McLeod, recognizes the horse and rescues the sheriff from the wilderness. Meanwhile Cheyenne meets Countess Maletta and his friend Nitro Rankin. The Countess is the owner of the local saloon and suffers from unrequited love for him, and feels guilty for the crime life of Cheyenne that committed his first murder to protect her ranch. When Steve returns to Red Valley and sees Cheyenne, he feels happy to see his old friend and Allison falls in love with Cheyenne. But Sheriff Steve is getting close to Jack Lester and now Stanley Clanton masterminds a plan to incriminate Cheyenne for robbing the bank. Will he succeed?
—Claudio Carvalho, Rio de Janeiro, Brazil