Someone has stolen all the horses that Jeff and Mary (Dennis Moore and Dorothy Fay) were going to sell to the cavalry.
The two young innocents believe that Mayor Rader (Jim Pierce) is trying to help them but, even allowing for a level of naivety, they should see that anyone with a mug like that can only be a rotter! Not only does he arrange for people to be murdered but he also wants to close the school where Mary teaches. How bad is that? Luckily Tex is on hand - along with comic sidekick "Arkansas Slim" Andrews - to sort the crooks out and sing the excellent title song. The bad guys must have liked it too: note how, when they decide to shoot him on the trail, they wait until he finishes the number before actually drawing their guns.
Good undemanding fun!