When Hank the Cowdog, Head of Ranch Security, follows Little Alfred to an archaeological excavation, he runs into trouble in the form of a gorgeous golden-haired lady dog, a peanut butter sandwich, and an enticing, ancient, buffalo bone.
While working on a mysterious case involving disappearing eggs and a fiddle-playing fox named Frankie, Hank the Cowdog falls for Miss Beulah, the beautiful collie.
Hank the cowdog goes to the rescue as a wild, one-eyed horse creates havoc on the ranch but some of his outrageious stunts get him into more trouble than he bargained for.
Drover C. Dog--faithful sidekick to Hank the Cowdog--tells the story of his life, from being the runt of the litter with dreams of being a handsome prince, to how he came to Loper and Sally May's ranch.
When Slim is left to take care of the ranch and little Alfred, who has the measles, he gets sick himself and a freak blizzard sets in, so it is up Hank to try to keep things under control.
With the threat of prairie fires looming, security expert Hank the Cowdog takes on extra duties as Head of Fire Safety, while trying to resist the mouth-watering hens in Sally May's chicken house.
Unaware that his nemesis Pete the Barncat is playing yet another prank on him, Hank the Cowdog, Head of Ranch Security, tries to save the world from "terradogtail" dinosaur birds armed with bacon-stealing laser tongs.
When Hank the Cowdog hears reports that coyotes are planning to go after the chickens, he manages to resist the temptation to join them and instead thwarts their attack, earning Sally May's forgiveness, and persuading Loper to stop feeding him Cheapo brand dog food.
Hank the Cowdog tries to help when a burglar comes around Slim's house, but Hank is not sure he has what it take to bring the criminal down after he is sprayed by his super-stinky weapon, a skunk.
Slim must complete Uncle Johnny's "little job"--which has become more complicated than Slim signed up for--and race home in time to patch things up with Miss Viola, or their engagement may be over.
Hank the Cowdog, Head of Ranch Security, and assistant deputy Drover engage in an epic battle with the coyotes, Rip and Snort, as they all seek some meaty treats.