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.

Starring:

Jason Lee, Justin Long, Matthew Gray Gubler, Jesse McCartney, Kimberly Williams-Paisley, Josh Green, Tony Hale, Bella Thorne, Eddie Steeples, Christina Applegate, Kaley Cuoco, Anna Faris, Jose D. Xuconoxtli Jr., Keith Arthur Bolden, Joshua Mikel

Genre:

Animation, Adventure, Comedy, Family, Fantasy, Music