Join the nurses and nuns of Nonnatus House once more as they visit the expectant mothers of Poplar, providing the poorest women with the best possible care. It's now 1962 and times are changing. After receiving as SOS call from a mission hospital in South Africa, the Nonnatus family faces some of their toughest challenges yet with increasingly limited resources. Back in Poplar, when Sister Ursula is appointed the new head of Nonnatus House, Sister Julienne finds herself demoted and working back alongside the midwives. As they strive to help mothers and families cope with the demands of childbearing, disability, disease and social prejudice, our beloved medics must make choices - and fight battles - of their own. Inspired by the memoirs of midwife Jennifer Worth and starring Jenny Agutter (The Avengers), Charlotte Ritchie (Fresh Meat), Judy Pafitt (Little Dorrit) and Helen George (Doctors).