The chipmunks and the chipettes are grow up and get engaged but will there ever get marryed after a disagreement about were to have it and the cake ,who is coming, the wedding songs and were the Honeymoon is going to be. The guys and the girls figure out all the things for the wedding. They decide to go to hawaii and have there honeymoon just before the wedding. Unfortunately they end up doing a show there during there honeymoon. In witch they are not happy having to do the show during the honeymoon.