Paladin is accused of stealing a painting in the small town of Bonanza.

Mrs. Kilmer is dying and asks Paladin to find her missing son, Martin Kilmer. Edwards, a detective, managed to trace Martin as far as Harper City, where Edwards was then killed. Fred Harper, a half crazy man who runs Harper City, doesn't want Paladin to succeed.

After encountering a woman burying her fiancee in an unmarked grave, Paladin is persuaded to go after the deceased's killer.