Through a series of misunderstandings, Alvin, Simon, and Theodore come to believe that Dave is going to propose to his new girlfriend in Miami, and dump them. They have three days to get to him and stop the proposal, saving themselves not only from losing Dave but possibly from gaining a terrible stepbrother.

Struggling songwriter Dave Seville opens his home to a talented trio of chipmunks named Alvin, Simon, and Theodore. When they become overnight music sensations, a greedy record producer tries to exploit the 'boys.' Now Dave must use a little human ingenuity and a lot of 'munk mischief to get his furry family back before it's too late.

John and Jen are journalists who are a newly married couple. Marley is the adopted puppy that no one wants, a high-strung lab who is virtually untrainable. Marley shreds cushions, destroys floors and walls and most everything in between. Instead of taking him to the pound, they love their dog and he faithfully loves them in return. John and Jen eventually have three children and Jen gives up her career to be a mom. John's career continues to advance...