When she's forced to attend a family affair, Sabrina sends a clone to Harvey's party, where the simple-minded stand-in (who can only speak three sentences) agrees to streak naked in order to liven up the festivities. Meanwhile, the real Sabrina desperately tries to ditch her relatives: an obnoxious socialite and her brat of a daughter, whose hobby is putting people she dislikes into jars. Knowing Harvey plans to dress as James Dean, Sabrina muses about the real star, but when her aunts give her a special Halloween present of a half hour with the dead person of her choice, she opts for her beloved grandmother instead, because "Halloween is really about family."

Sabrina has blown her allowance, and Salem has maxed out his credit card over the phone, so they decide to enter a cat show to earn the prize money, but soon find themselves wrapped up in a blackmail scheme to force the judge to throw the competition, and, to avoid being caught, Sabrina has to transform herself into a contestant. Meanwhile, Hilda and Zelda seek out a magical perfume that will make Zelda repulsive to their love-sick mailman Dirk, and Hilda gets shrunk as a punishment for taking free samples in the magical "Full Moon" shop.