Through a series of misunderstandings, Alvin, Simon and Theodore come to believe that Dave is going to propose to his new girlfriend in Miami...and dump them. They have three days to get to him and stop the proposal, saving themselves not only from losing Dave but possibly from gaining a terrible stepbrother.
|violence||The film contains some mild comic violence involving the chipmunks when an air marshal is after them for causing a nuisance on a flight. During a bar brawl involving the chipmunks, toothpicks are seen sticking out of a man's face.|
|alcohol||An air marshal gets drunk on moonshine at Mardi Gras.|