John Wayne rides into a saloon and finds the player piano running and everyone in the place dead. The safe has been broken into as well. As Wayne investigates the scene the sheriff and posse arrive and promptly arrest Wayne vowing to get his gang as well. Breaking out of the jail with the help of the saloon owner because she knows he didn't do it Wayne is off to find out who did.
Though held by many as a classic, I'm not too sure of its status. Its certainly got some good moments and at least one classic moment in it, but its not really a classic sort of film. The opening of the film where John Wayne walks into the saloon and finds everyone dead is one of the creepiest sequences I've ever seen in any sort of film. There is something unsettling about the whole affair that really gets under your skin. Its the type of thing that makes you sit up and pay attention, I just wish the rest of the film was on on par with that one scene.
Unfortunately this 53 minute film also has a great deal of filler. There are frequent stretches were people just ride between locations. This doesn't include the chases which seem to spring up every five minutes or so. Its deadly and it kills the pace of the film which would be a taut 30 or 35 minute with out them.
Worth a look for that one scene if nothing else.