In Canadian, Texas, in 1927, not long after his father's death, Riley and his fiddle-playing grandfather must find a way to save the family ranch from a group of moonshiners and the men behind their operation.
Hank the Cowdog and Deputy Drover investigate a monster that appears just as they are about to arrest Eddy the Rac for ripping one of Sally May's sheets while it hangs on the clothesline.
Hank the Cowdog recounts how he barely escaped crazy Slim and his tail-eating vacuum sweeper and single-handedly saved the ranch from a huge catastrophe.
While performing his duties on the ranch, Hank the Cowdog finds that his bones are disappearing, and his friend Drover claims to have seen a monster do it.