Antoine Espérandieu, a French tenderfoot, lands in Windows Canyon, Arizona, a remote place under the thumb of dangerous outlaw Dynamite Jack, only to discover the friend he was to meet there has been murdered. Worse, it is not long before Antoine realizes he is Jack's perfect lookalike. All the same, he decides to settle down in the small town, where he becomes the local tax collector. One day, he finds himself face to face with the bandit.