... because most Gunsmoke episodes that are this light usually are.
Festus' nephew Eliab comes to Dodge to shoot off part of Festus' ear in retaliation for Festus having bitten off the ear of Eliab's father years ago. Eliab is a crack shot, so Festus is constantly running from Eliab to avoid his titular aim. Oddly enough, Eliab has nothing but good things to say about Festus. This "ear for an ear" business is just a matter of family honor to him.
If this had just been Festus running from Eliab for 50 minutes, it would have gotten tiresome. So injected into the plot is a cross cards dealer, a one of a kind pair of boots and a tall widow attracted to anybody wearing said boots.
Quint has been left in charge in Matt's absence, and although the idea of somebody relentlessly tracking somebody else down in order to maim them sounds serious, Quint doesn't have the heart to jail Eliab because of his childlike demeanor. But then somebody that Eliab was seen quarreling with is found shot dead, and Quint is wondering if Eliab is that harmless after all.
James Arness had said that Burt Reynolds was very talented, but the role of Quint didn't really allow him to use his best quality in his acting - his sense of humor. This is one episode where he does indeed get to use that quality, and you can almost see the Burt Reynolds of the 1970s peek through just a bit.