Alvin and the Chipmunks:
A struggling songwriter named Dave Seville finds success when he comes across a trio of singing chipmunks: mischievous leader Alvin, brainy Simon, and chubby, impressionable Theodore.

Alvin and the Chipmunks - The Squeakquel:
Pop sensations Alvin, Simon and Theodore end up in the care of Dave Sevilles twenty-something nephew Toby (Zachary Levi). The boys must put aside music superstardom to return to school, and are tasked with saving the schools 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.