Bugs is traveling by tunneling underground—and runs straight into a tree. He heads for Pittsburgh, Pennsylvania, as he observes "these Pennsylvania hardwoods ain't too soft!", but he does not immediately notice that a sign nailed to the tree reads "Pittsburghe, Transylvania". He asks a two-headed female vulture (Agatha and Emily) for directions to "Pittsboig" when he realizes that he has not reached the Steel City, but Agatha and Emily are too busy talking about eating him. Bugs leaves them to it, sees an old castle nearby, mistakes it for a motel and calmly approaches it. Upon ringing a skull/chime doorbell (playing "The Hearse Song") Bugs meets a vampire, who introduces himself as Count Blood Count and invites him in. Although Bugs is only looking for a telephone to call his travel agency, the Count leads him to a guest room beckoning him to rest, informing him that "Rest is good for the blood.".
Unable to sleep, Bugs picks up a book titled Magic Words and Phrases, and despite his initial skepticism about their effect, he reads it. The Count sneaks up behind him and is just about to strike when Bugs says "abracadabra", turning the Count into a bat. Bugs mistakes the bat/Count for a big mosquito and clobbers him with a fly swatter. As the bat dizzily flies out of the window, Bugs says "hocus pocus", which turns the Count back into a vampire and causes him to fall into the moat surrounding his castle. Agatha and Emily wonder what a splendid-looking specimen the Count is as they watch him take the plunge.
Shortly afterward, while Bugs is searching for the house restaurant, the Count sneaks up from behind again, but Bugs is humming to the tune of "It's Magic", substituting "abracadabra" for some of the lyrics, and inadvertently turns the Count back into a bat. Once again mistaking the bat for a mosquito, Bugs sprays the bat with a fumigator. As the bat/Count is hanging his head down from an archway, coughing insecticide out of his lungs, Bugs sings "hocus pocus" during a continuation of his song, and the Count crashes to the floor on his head.
Fed up with the situation, the Count confronts Bugs and reveals his true identity as a vampire, resulting in a duel of "magic phrases" in which Bugs transforms into a baseball umpire. He then turns himself into a baseball bat when the count turns himself into a bat (with "hocus pocus" strangely enough) to hit the bat-vampire on the head (despite the Count putting on glasses in a futile attempt to keep Bugs from doing so). Bugs gets the best of the Count for the rest of the duel by saying "abracadabra" every time the vampire says "hocus pocus", causing him to be crushed repeatedly by a stone slab from the floor that the Count intended to crush Bugs with. By mixing the magic words to "abraca-pocus" and "hocus-cadabra", Bugs causes the Count to become a mixture of human and bat body parts. Afterward he uses "Newport News" and turns him into Witch Hazel. Unimpressed ("Wow, I can do better than that"), he uses the incantation "Walla Walla, Washington", and the Count is turned into a two-headed male vulture. Bugs calls out to Agatha and Emily, and the Count soon finds himself the object of their romantic intentions. The Count flees the castle with the female vulture in amorous pursuit as Bugs watches in amusement.
Bugs finally finds a working pay phone (in a coffin), but while waiting for the operator to reach his travel agency in Perth Amboy, he mumbles "abraca-pocus", and his ears turn into bat wings. Bugs tells the operator to cancel the call, hangs up, and decides to fly home with his new wings.
