In the third entry in the popular live-action/animated series, Alvin, Simon, Theodore, their guardian Dave (Jason Lee), old foe Ian (David Cross), and Chipettes Brittany, Jeanette, and Eleanor wind up marooned on a tropical island. Their adventure includes an encounter with a mysterious castaway named Zoe (Jenny Slate), a dangerous volcano, a buried treasure, and a spider bite that brings about an odd change in Simon. Also features the voices of Justin Long, Anna Faris, Amy Poehler, and Christina Applegate. 87 min. Widescreen; Soundtracks: English Dolby Digital 5.1, DVS Dolby Digital 5.1, French Dolby Digital Surround, Spanish Dolby Digital Surround; Subtitles: English (SDH), Spanish; featurettes.