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.
After the disastrous food storm in the first film, Flint and his friends are forced to leave the town. Flint accepts the invitation from his idol Chester V to join The Live Corp Company, which has been tasked to clean the island, and where the best inventors in the world create technologies for the betterment of mankind. When Flint discovers ...
Inventor Flint Lockwood creates a machine that makes clouds rain food, enabling the down-and-out citizens of Chewandswallow to feed themselves. But when the falling food reaches gargantuan proportions, Flint must scramble to avert disaster. Can he regain control of the machine and put an end to the wild weather before the town is destroyed?
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.