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In exchange for certain favors--namely, getting her brothers to take over her babysitting duties while she goes skiing--Laurie (Susan Dey) poses as a Southern gal named Lauriebelle Culpepper. It's all part of a master scheme hatched by brother Keith (David Cassidy) to win over a girl named Karen (Sherry Miles) by making her jealous. Even mom Shirley (Shirley Jones) is swept up in the deception, passing herself off as Southern-fried "Mother Culpepper." But the plan burns to the ground like Atlanta when Karen makes a surprise revelation. Song: "How Long is Too Long?"