Unable to find the telegram's recipient, and suffering from a severe case of hiccups, he stumbles upon the home of "Dr. Jerkyl" and hopes that the physician can cure his condition.

Hoping to scare Daffy in order to cure his hiccups, Dr. Jerkyl creates and drinks a potion that turns him into Chloe, a grotesque ogre.

Daffy, realizing he has reached his destination, then reads Chloe the telegram: the lyrics to "Happy Birthday To You" (albeit spoken and not sung), sent to him by Mr. Frank N. Stein.

Chloe, who is enamored with Daffy (who, in turn, is now cured of his hiccups), chases the duck around the laboratory until the radio is accidentally switched on, prompting him to dance.

As each brandishes a hammer insisting each one doesn't know the other that well (doing imitations of Red Skelton's "Mean Widdle Kid" character), the action moves offscreen, a large thud is heard, and the bird from the doctor's cuckoo clock displays a large sign reading “He Dood It!” The baby Dr. Jerkyl then screams "Ooo, you broke my little head!