Cowlorado Kid discovers gold in a river causing the Gold Rush on Moo Mesa which even gets Mayor Bulloney, Saddle Sore, and Boot Hill Buzzard to work on claiming the gold. Upon Boom Town being formed as part of the gold rush, the C.O.W.-Boys work to keep the settlement in line. When a claim-jumper named Big Bucks and his henchmen Digalong and Stub plot to steal everyone's gold, the C.O.W.-Boys spring into action to protect Boom Town.

In preparation for the 11th Annual Cowtown Cross Country Race, Cowlorado Kid encounters some competition Cowlamity Kate's cousin Cowleen and her horse Tornado as well as encountering his old rival Swifty Buckhorn. Fast Willy and his henchmen plan to steal Tornado so that they can rob the Pony Express with one of the packages being the trophy for the Cross Country Race. Now Cowlorado Kid and Swifty Buckhorn must put aside their differences to help Moo and Dakota catch Fast Willy and reclaim Tornado.