This movie is the sequel to a movie about three chipmunk brothers who can talk, and even sing, and become international pop stars. In the squeakquel, as they call it, the three find love in the shape of three unbelievably cute and charming female chipmunks who can also sing. They also learn a thing or two about life, about the importance of teamwork, caring for others' feelings, and being there for each other.
I would have to say that I liked the first movie better, but I guess that was mostly because of the novelty factor. The second one has too many people in it, which creates a bit of a jarring distraction. Even so, it has some really cute scenes, especially the conversations between Theodore (the littlest male chipmunk) and Eleanor (the littlest female chipmunk). And the one where Alvin tries to kiss Simon. Cute family movie which has a little something for everyone.