Pop sensations Alvin, Simon and Theodore end up in the care of Dave Seville's twenty-something nephew Toby (Levi). The boys must put aside music superstardom to return to school, and are tasked with saving the school's music program by winning the $25,000 prize in a battle of the bands. But the Chipmunks unexpectedly meet their match in three singing chipmunks known as The Chipettes - Brittany, Eleanor and Jeanette. Romantic and musical sparks are ignited when the Chipmunks and Chipettes square off.
Cast:
- Zachary Levi - Toby
- David Cross - Ian
- Jason Lee - Dave
- Justin Long - Alvin (voice)
- Matthew Gray Gubler - Simon (voice)
- Jesse McCartney - Theodore (voice)
- Amy Poehler - Eleanor (voice)
- Anna Faris - Jeanette (voice)
- Christina Applegate - Brittany (voice)
- Wendie Malick - Dr. Rubin
- Anjelah N. Johnson - Julie (as Anjelah Johnson)
- Kathryn Joosten - Aunt Jackie
- Kevin G. Schmidt - Ryan
- Chris Warren Jr. - Xander
- Bridgit Mendler - Becca