Bud and his friend "Thundering Eagle" are washed with all the waters. Two prairie foxes who break through because their imagination does not let them down when it comes to knocking their wealthy fellow citizens over the ear. One day they "quite randomly" come into possession of a promising travel bag and come to Yucca, a god-forsaken nest at the end of the Wild West. The residents consider the newcomers to be members of the dreaded gang of Colorado Slim. But the bag - does not belong to the most eagerly awaited doctor? Soon the patients are in line to have the radical cures prescribed by the miracle doctor and his assistant. Coin-sounding, of course. But not only the sheriff of the place draws suspicion. Also the skewers of Colorado-Slim. You have to find that the doctor can handle fists and Colt as well as with ballpoint pen and recipe pad. Whatever means Colorado-Slims gang uses, they will not get rid of the new medicine men. It comes the big day of the city founding when vigorously celebrated. The opportunity for Colorado-Slim to plunder all banks in one go. But Bud and "Thunder Eagle" stick to their tried and tested recipe.