Dipper Draper, the outlaw, fights it out with Sheriff Bobby Thornbody . They visited the Jackson Hole, Wyoming. And they are playing on an old west set.
This is part of The beach bear story, a great audio story that I highly recommend you to listen. It's about the adventure of three bears who are part of a music band called The Beach Bears, you will love all the characters!. If you are interested, you can start the story right here:
http://www.furaffinity.net/view/11432986
This is the cover art for the chapter titled Wild Montana Skies: http://www.furaffinity.net/view/24988801/
Picture for Dipper