Deloris Van Cartier is again asked to don the nun's habit to help a run-down Catholic school, presided over by Mother Superior. And if trying to reach out to a class full of uninterested students wasn't bad enough, the sisters discover that the school is due to be closed by the unscrupulous chief of a local authority. Showgirl Deloris Van Cartier returns as Sister Mary Clarence to teach music to a group of Catholic students whose run-down school is slated for closure.