The nuns and midwives of Nonnatus House move into their new premises and Sister Winifred arrives.
The nuns and midwives of Nonnatus House move into their new premises, and Sister Winifred, a warm-hearted, slightly innocent young woman, arrives from the Mother House. Sister Monica Joan's increasingly eccentric behavior causes concern, yet she's the one who solves a perplexing medical mystery. New housewife and mother Chummy spearheads an Open Day at the Community Centre. After helping to deliver a neighbor's baby, she decides she wants to return to midwifery.