Alvin and the Chipmunks: Chipwrecked

Alvin and the Chipmunks Chipwrecked is a 2011 American liveaction comedy film directed by Mike Mitchell. It is the third installment in the Alvin and the Chipmunks film series, the film stars Jason Lee, David Cross and Jenny Slate with the voices of Justin Long, Matthew Gray Gubler, Jesse McCartney, Amy Poehler, Anna Faris and Christina Applegate. It was distributed by 20th Century Fox and produced by Fox 2000 Pictures, Regency Enterprises and Bagdasarian Company. The film is a sequel to the 2007 film Alvin and the Chipmunks and its 2009 sequel Alvin and the Chipmunks The Squeakquel, and it was released on December 16, 2011. A fourth film, Alvin and the Chipmunks The Road Chip, was released on December 18, 2015.

Meanwhile, the Chipmunks find an island and they sleep for the night. Dave enlists Ians help to find the same island and begin looking for the Chipmunks. The next morning, the Chipmunks go and find food and while doing so, an island castaway named Zoe Jenny Slate shows up and sees the Chipmunks and Chipettes for the first time. They then go to Zoes tree house where Eleanor sprains her ankle and Simon gets bitten by a spider, the side effects including personality changes and loss of inhibition.The morning after, everyone observes Simons personality has changed and he has no memory of being Simon he also thinks he is a French, adventurous chipmunk named Simone Alan Tudyk. Simone becomes attracted to Jeanette but does not take as kindly to Alvin and Brittany. Later, Zoe takes Simone, Jeanette, Eleanor and Theodore to a lake with a waterfall and Simone finds a cave. He returns with a gold bracelet which he gives to Jeanette as a crown. Brittany and Alvin see an active volcano the next day and they decide that they have to leave the island with the others. Theodore and Simone find Dave and Ian and they go to meet with the other chipmunks. They all begin to prepare a raft to get them off the island and everyone is assigned a job. When Jeanette and Simone go and look for food, Simone is knocked unconscious and Jeanette is kidnapped Simone reverts to Simon afterwards. ........

Source: Wikipedia