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.

Two teenage yoga enthusiasts team up with a legendary man-hunter to battle with an ancient evil presence that is threatening their major party plans.

The story of Brandon Burlsworth, possibly the greatest walk-on in the history of college football.