Anna
Through a series of misunderstandings, Alvin, Simon and Theodore come to believe that Dave is going to propose to his new girlfriend in New York City - and dump them. They have three days to get to him and stop the proposal.
Darlene
Lonely guy Fred Stoller is thrilled when his good buddy, Vinnie D'Angelo, the world's happiest agoraphobic and fattest vegetarian, comes to live with him, until Vinnie also proves to be the world's most maddening roommate.
Erica
In the 1980s, a drummer is abandoned by his band just before they become rock superstars. Twenty years later, the drummer sees his second chance at stardom arise when he is asked to perform with his teenage nephew's high school rock band.
