The real alvin and the chipmunks

Alvin and the chipmunks are back-as kids? It's the 4th chipmunk movie, but the story in it would make it the FIRST alvin and the chipmunks. children and actors are staring in the movie. All new charecters that you never saw before! Dave has a sister and a neice? Ian was married and had two daughters?! Jeanette wore contacts?! what will happen in this movie?