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.
Alvin and the Chipmunks: The Road Chip is a 2015 American live-action animated musical comedy film directed by Walt Becker and written by Randi Mayem Singer and Adam Sztykiel. It is based on the characters Alvin and the Chipmunks created by Ross Bagdasarian Sr. and the Chipettes created by Janice Karman. It is the fourth and final installment in the live-action Alvin and the Chipmunks film series and the sequel to Alvin and the Chipmunks: Chipwrecked (2011). The ensemble cast includes Jason Lee, Tony Hale, Kimberly Williams-Paisley and Josh Green. Justin Long, Matthew Gray Gubler and Jesse McCartney all reprise their voice roles as the Chipmunks, while Kaley Cuoco, Anna Faris and Christina Applegate voices the Chipettes, with the former replacing Amy Poehler as the voice of Eleanor in the film. The plot centers on the Chipmunks as they head to Miami after believing that Dave Seville will propose to his girlfriend Samantha, who has a son who bullies the Chipmunks.