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.

• TSG Entertainment
• Fox 2000 Pictures
• Jason Lee
• Justin Long
• Matthew Gray Gubler
• Jesse McCartney
• Kimberly Williams-Paisley
• Josh Green
• Tony Hale
• Bella Thorne