Alvin, Simon, and Theodore believe Dave (Jason Lee) is going to propose to his new girlfriend Samantha during a getaway to Miami and after that, he'll have no need for them and will get rid of them. They have three days to reach him and stop the proposal.
|Cast:||Jason Lee, Justin Long, Jesse McCartney, Matthew Gray Gubler, Bella Thorne, Kimberly Williams-Paisley, Tony Hale|
|Studio:||20th Century Fox|
|Producer(s):||Janice Karman, Ross Bagdasarian|
|Writer(s):||Randi Mayem Singer|