The story follows Mitchie Torres (Demi Lovato), an aspiring young musician who is hoping to become a professional singer. Mitchie wants to go to a music camp named "Camp Rock". Since the family can't afford the tuition, Mitchie's mother arranges to cater food for the camp, thus allowing Mitchie to attend. Mitchie tries to conceal this from her friends at camp. She is shy to sing in front of people.
Spoiled brat/pop star Shane Gray (Joe Jonas) has been assigned to be in charge of dance classes for one month at Camp Rock by his bandmates Jason (Kevin Jonas) and Nate (Nick Jonas). Shane hears Mitchie singing and falls in love with the voice, but does not know the identity of the singer. Shane spends much of the film searching for the girl with the voice. Shane and Mitchie have various interactions, and, when Shane learns her identity, a romance between the two blossoms.