In the final season of this smash-hit family comedy, unassuming teenager Miley Stewart (Miley Cyrus) steps up her efforts to keep Hannah Montana -- her megastar alter ego -- a secret from her friends and classmates. On top of the challenges posed by her double life, Miley faces missing a semester of her senior year when Robbie (Billy Ray Cyrus) forgets to register her for school. Meanwhile, Jackson (Jason Earles) crushes on a neighbor's cousin.