Trama

Elmer Fudd is a mad scientist who wants to turn Bugs Bunny into a fiend. Bugs tricks this ersatz Dr. Jekyll into drinking his own mixture; later, each thinks the other has changed into a bear.

Elmer is a mad scientist working on a serum that will turn victims into monsters. He tries out the potion on Bugs, but it's unsuccessful. Elmer, however, gets Bugs mixed up with a bear, and assumes his potion works--with wacky results!—Mike Konczewski

Bugs Bunny obliges Elmer Fudd by stepping into his crude rabbit trap and letting Elmer take him to his laboratory. That was a mistake. Elmer is a mad scientist trying to create a formula that will turn a "normal character into a devilish fiend." He pours a test tube full of liquid down Bugs's throat, but after a tableaux of agonized poses, nothing happens. Elmer is disconsolate, so Bugs cheers him up by having him drink some of the formula himself. Circumstances trick both Elmer and Bugs into thinking the evil mixture has changed the other into a bear. But the bear is a real bear, and the two antagonists had better watch out.—J. Spurlin