When famous magician Ala Bahma tries promoting his show by putting posters on every tree in the forest (including the tree Bugs Bunny was living in, BIG mistake), he accidentally angers Bugs even more by using some of his tricks on him. Bugs decides to get his revenge on the magician, both by ruining his show, and humiliating him in front of an audience. Considering the fact that, "in a cartoon you can do anything" (Tex Avery), when you add magic users into the mix, hilarity is guaranteed. Chuck Jones' genius is clear all throughout this short, and is one of the best Bugs Bunny cartoons ever made.
Two interesting tidbits about this short: the line "Of course you realize this means war!" (one of Bugs' more famous and most used lines, although it was later changed into "Of course you know this means war!") originates from this cartoon. And, quite interesting, Bugs' most famous line ("Eh, what's up, Doc?") is not used at all during this cartoon.