Alvin and the Chipmunks: The Squeakquel is a 2009 American live-action animated jukebox musical comedy film directed by Betty Thomas and written by Jon Vitti and the writing team of Jonathan Aibel and Glenn Berger. It is based on Alvin and the Chipmunks and The Chipettes. It is the sequel to Alvin and the Chipmunks (2007) and the second installment in the live-action Alvin and the Chipmunks film series. The film stars Zachary Levi, David Cross and Jason Lee. Justin Long, Matthew Gray Gubler and Jesse McCartney return to voice the Chipmunks from the previous film. Christina Applegate, Anna Faris and Amy Poehler voice the new characters. The film sees the Chipmunks entering high school under the care of Dave Seville's cousin, Toby. Meanwhile, Ian Hawke recruits the Chipettes to restore his career.