When Mitchie, Shane, Jason, and Nate return for another summer at Camp Rock, they soon learn that a new state-of-the-art music camp has opened across the lake. Camp Star has lured away many of the Camp Rock instructors and campers, and the future of Camp Rock is in jeopardy. The rivalry gets even more intense when Camp Star challenges Camp Rock to a musical showdown. Which group will win the battle of the bands?