Lewis Tater writes Wild West dime novels and dreams of actually becoming a cowboy. When he goes west to find his dream he finds himself in possession of the loot box of two crooks who tried to rob him.

Problems come in the form of one of Hopalong Cassidy's neighbors, but the matter is settled when Hoppy roots out the troublemaker.

Lambert owns the trucking line that ships cattle to market. When he raises his rates Roy decides to ship the cattle on the River Boat. When Lambert and his men are unable to stop the boat, they rustle the cattle.