After their novitiate is completed Sister Catherine (Diane) comes back to Santo Spirito Convent School to the joy of Sister Paul (Veronica). Sisters Paul and Catherine are teaching a young teenager, Frances. Frances is a loner who has difficulty at school. Her parents are divorced and her mother is planning on remarrying. After the Bishop says no about Liz and Roger marrying in a Catholic ceremony, the two plan on marrying in a Civil ceremony. After getting permission from Mother Ambrose, Frances, Sister Paul and Catherine attend the wedding. However, Sister Agnes and a few of the students find out. Liz and Frances are ostracised by the nuns and students with the exception of Sisters Paul and Catherine and Rosemary and Brigid. Thankfully, all wrongs are righted when Frances gets the part in the school play and is confirmed in the Catholic faith. Frances is very happy to have two good dads, a great mum and two best friends.