When Dave starts feeling old on his birthday, The Chipmunks decide to set him up on a date with Marcy Apple, his old college sweetheart. But Marcy has to work late so he goes out with Bambi, her younger sister. They begin seeing each other regularly, to the boys surprise. Alvin forces his brothers to spy on Dave to help "save" him from his new relationship, much to Dave's disappointment. While doing so, they overhear a conversation about marriage and decide to become orphans again. Dave finds them in time to short out the confusion and take Bambi to the airport.
- "Addicted to Love" originally performed by Robert Palmer.