A traveler riding a donkey appears on a lawless street ruled by Sancho's gang. Sancho tries to get rid of the mysterious traveler, but fails. One day, Piri, the sheriff's son, begs the traveler to save his mother, who has been kidnapped by Sancho. Although the traveler had vowed never to hold a gun again, he confronts Sancho to fulfill the young Piri's wish. In the end, Sancho is killed by the traveler, and order is restored to the street. The donkey traveler then sets off on his aimless journey again.