A group of zoo animals decide to break their code of silence in order to help their lovable zoo keeper find love -- without opting to leave his current job for something more illustrious.

The sisters come back to Delores's show to get her back as Sister Mary Clarence to teach music to a group of students in their parochial school which is doomed for closure. One of the girls, who is the most talented of the bunch, is forbidden to sing by her mother, although the choir has made it to the state championship. A group of stereotypical incompetent monks tries to stop them.