A young diabetic girl faces heartbreak when she falls pregnant as a result of a clandestine romance. Elsewhere, the midwives become involved with a settlement of Irish Travellers and Sister Mary Cynthia delivers her first baby since becoming a nun.

Trixie and Sister Mary Cynthia team up to support a deaf mother-to-be, while a case of morning sickness proves more serious than initially suspected. Elsewhere, Fred's daughter is less than delighted about his forthcoming wedding.