Playing around while aboard a cruise ship, the Chipmunks and Chipettes accidentally go overboard and end up marooned in a tropical paradise. They discover their new turf is not as deserted as it seems.
The journey of Manolo, a young man who is torn between fulfilling the expectations of his family and following his heart. Before choosing which path to follow, he embarks on an incredible adventure that spans three fantastical worlds where he must face his greatest fears.
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.