Lancaster is a Mexican-American peace officer who runs across a party of men blasting guns at a shack. He learns that the men are trying to bring out Monson, a black man accused of murdering a local trader. After Lancaster calms the group Monson comes out only to be shot at by a still
angry vigilante. Monson fires back, and Lancaster is forced to kill him. Cypher, a wealthy rancher heading the party, looks at the corpse and realizes they killed the wrong man. Lancaster tries to raise $200 to give Monson's widow. Locals agree to provide half the money with the understanding that
Cypher will put up the rest. When Lancaster confronts the man he is rebuffed, then tied ...