Lucas and Mark are in another town to sell a bull to Joe Lovering. Mark wants to buy two horses from Mr. Schneider for $25 each. Schneider, wanting to leave town in a hurry, sells the horses to Mark. Neither Mark nor his father knows that the horses have been illegally bought and now resold to them. When the posse encounters them on the road, Lucas has a hard time explaining the two horses that Mark bought in spite of the bill of sale.