On vacation aboard a luxury cruise ship, Alvin, Simon, Theodore and The Chipettes are up to their usual antics, turning the ship into their personal playground, until they become ‘chipwrecked’ on a desert island.

As dave seville frantically searches for his awol charges, the ‘munks and chipettes do what they do best- sing, dance and wreak havoc. But they’re in for a surprise when they embark on an island adventure with their new friend, a castaway who's more than a match for alvin and the chipmunks.