Droopy takes a commercial flight to Ireland and winds up taking a solo sightseeing tour, buying a little leprechaun hat from a lady on a street corner, and then visiting "Shillelagh Castle." En route, our favorite Irish dog, Butch, spots him and thinks he's just seen his first real leprechaun!
Butch follows him into the castle, where Droopy sees a painting "The Mad Duke," who supposedly haunts the castle. The guy looks just like Butch, so Butch jumps into a suit of armor and spooks poor Droopy. The two then go at it, both thinking the other guy is someone else - either the Mad Duke or the valuable leprechaun.
Sooner or later, one of them figures it out.
This was the last of the Droopy cartoons, at least the ones in "The Complete Theattrical Collection" DVD package that came out recently. I am sorry to see it end. These were some of the best cartoons I've ever watched. This DVD set is recommended for anyone who loves to laugh