When Miley's scheming, look-alike cousin Luann pays a visit, she's surprisingly well behaved. Miley thinks they finally might have gotten over the rough patch from their childhood, and even invites Luann to the coolest Halloween party in town. But when Luann hog-ties Miley in her pop-star closet, Miley realizes she's made a big mistake! Will Miley's friends rescue her in time to stop Luann from revealing Miley's secret identity? Plus, when Miley's grandmother comes for a visit, Miley's brother Jackson seems to be getting more than his fair share of attention. Didn't anyone teach Grandma Stewart not to play favorites?