Alvin, the leader; Simon, the smart one ... In contrast to Dave Seville, who is the Chipmunks' beleaguered but compassionate ...

In a tree farm, three musically inclined chipmunks named Alvin, Simon and Theodore find their tree cut down and sent to Los Angeles. Once there, they meet the frustrated songwriter David Seville ...

And thus, a show like Alvin and the Chipmunks was ... treatment as poor Dave Seville became the adopted father for jerky, smarty and fatty -- otherwise known as Alvin, Simon and Theodore.

Alvin, Simon, Theodore have been living with, and annoying, Dave Seville for about 8 years now ... To save their relationship with Dave, the Chipmunks must find a way to stop him from proposing.