Pop sensations Alvin, Simon and Theodore end up in the care of Dave Seville's twenty-something nephew Toby. The boys must put aside music super stardom 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.
- Genre: Comedy, Family, Animation, Fantasy, Music
- Studio: 20th Century Fox, Dune Entertainment, Regency Enterprises, Fox 2000 Pictures, Bagdasarian Productions
- Keyword: chipmunk, aftercreditsstinger, duringcreditsstinger, woman director, live action and animation
- Cast: Zachary Levi, David Cross, Jason Lee, Justin Long, Matthew Gray Gubler, Jesse McCartney