Chipmunk singing sensations Alvin, Simon and Theodore are back for an encore in this hilarious "squeakquel" packed with more action and more nutty fun for the whole family! When a concert mishap lands Dave (Jason Lee) in the hospital, the Chipmunks take a break from superstardom and enroll in school to fit in with kids their age. But they soon face some stiff competition when they meet the Chipettes - a beautiful, talented trio of chipmunks discovered by Ian (David Cross), the boys' evil ex-manager!