Nobody on the ranch has seen a drought like the one this summer, ponds have dried up, the creek is down, and the cows are kicking up dust. Then there is a prairie fire. There is a desperate need for rain, and Pete the Barncat is trying to ruin Loper's birthday.

"The drought on Hank's ranch has finally ended, and it's a beautiful spring day. In fact, it's the kind of day in which the Head of Ranch Security really wouldn't expect to find himself protecting the ranch from bloodthirsty mosquitoes, doing toad duty, or, most especially of all, standing between his cowboy friends and a sick and angry cow. However, that's exactly what happens when Miss Viola asks Slim and Hank to help Woodrow haul a cow to the veterinarian....