The film starts with Mitchie (Demi Lovato) returning to Camp Rock and
meeting all her friends. Meanwhile, the trailer of Shane (Joe Jonas)
and his brothers Jason (Kevin Jonas) and Nate (Nick Jonas) gets stuck,
causing them to use a wagon to get to Camp Rock. Over there, they learn
of Camp Star, a rival camp across the lake which invites them to a
friendly bonfire. After seeing Camp Star's performance, many members of
Camp Rock leave and join Camp Star including Tess Tyler (Meaghan Jette
Martin) , the former diva of Camp Rock. Nate falls in love with Dana
(Chloe Bridges) , daughter of Camp Star's owner. Since most of Camp
Rock's staff has left, Mitchie and the older campers take up the role
of counselors and decide to challenge Camp Star to Camp Wars, a musical
showdown being broadcast on TV.