Through a series of misunderstandings, Alvin, Simon and Theodore come to believe that Dave is going to propose to his new girlfriend in New York City - and dump them. They have three days to get to him and stop the proposal.
Jason Lee
as Dave
Justin Long
as Alvin (voice)
Matthew Gray Gubler
as Simon (voice)
Jesse McCartney
as Theodore (voice)
Kimberly Williams-Paisley
as Samantha
Josh Green
as Miles
Tony Hale
as Agent Suggs
Bella Thorne
as Ashley Grey
Eddie Steeples
as Barry
Christina Applegate
as Brittany (voice)
Kaley Cuoco
as Eleanor (voice)
Anna Faris
as Jeanette (voice)
