Sophie Cosson

As Jenny Lee settles into her role, there is a new arrival at Nonnatus House, Chummy (Miranda Hart). A welcome pair of extra hands Chummy sets about showing her worth, but an overwhelming keenness to please and her inability to ride a bike prove obstacles in gaining the respect of Sister Evangelina. Meanwhile a chance encounter with Mary, a young pregnant runaway, forces Jenny to see an unfamiliar darker side of life.

Jenny is placed on the district nursing roster for a few weeks, to extend her experience of community practice. During her rounds she attends to Joe, a gentle old soldier, and a friendship forms. At the antenatal clinic Trixie and Cynthia enrol Winnie Lawson as new patient. In her forties Winnie had thought her days of nappies and babies were long gone, and seems upset by her pregnancy. By contrast her husband Ted is overjoyed by the news. However at the baby's birth everyone gets a bit of a surprise.