In this animated family adventure, Alvin, Simon, Theodore, and the Chipettes embark on a vacation cruise with their guardian, Dave Seville, voiced by Jason Lee. However, their fun-filled trip takes an unexpected turn when they find themselves stranded on a deserted island. As they navigate the challenges of island life, they encounter a mysterious castaway, played by Jenny Slate, who adds an intriguing twist to their adventure. Directed by Mike Mitchell, the film combines humor and heart, appealing to audiences of all ages. For those interested, it can be viewed for free on 123Movies / Movies123.