Miley Stewart (MILEY CYRUS) seems like an average teenage girl, but unbeknownst to all but a handful of people, her alter-ego is huge pop star sensation Hannah Montana. The fact that she's seemingly starting to forget her real identity isn't sitting well with her widowed dad, Robby Ray (BILLY RAY CYRUS), and when she shows up at the 16th birthday party for her best friend Lilly (EMILY OSMENT) dressed as Hannah -- more out of necessity while trying to avoid paparazzo Oswald Granger (PETER GUNN) while traveling with her publicist, Vita (VANESSA WILLIAMS) -- her dad knows he has to take extreme measures.
Accordingly, rather than flying with her to an awards show in New York, he diverts the private plane back to their hometown of Crowley Corners, Tennessee in order to celebrate her grandmother Ruby's (MARGO MARTINDALE) birthday along with others, including her older brother Jackson (JASON EARLES). Miley isn't happy about this development, but can't do much about her dad's two week "Hannah detox," although things look up a bit when she runs into her former childhood friend, Travis Brody (LUCAS TILL), who's grown up into a handsome and charming young cowboy who's working for Ruby.
Also employed by her as the ranch foreman is Lorelai (MELORA HARDIN) who catches Robby Ray's eye and vice-versa. As her grandmother tries to save Crowley Corners from developer Mr. Bradley (BARRY BOSTWICK) who wants to build a shopping mall there, Miley returns to her roots and sees what's really important in life, all while trying to prevent her alter-ego secret from being revealed.