The team tries to unite an estranged mother and daughter who are both pregnant. Trixie's friend is devastated to discover she is pregnant.

Poplar welcomes a brand new cervical cancer-screening clinic to the Institute and Dr Turner, Shelagh and Trixie are pleased to be part of the exciting new venture.

Lucille is seconded to St Cuthbert's when a ward sister is off sick, but a lift malfunction sees her spend the evening with mother-to- be Connie instead of her planned rendezvous with Cyril.

Sister Julienne volunteers to put up four trainee doctors at Nonnatus House while they undertake the practical aspect of their obstetrics diploma, hoping the exercise will remind the council how vital the home is to the community and help remove the threat of demolition.

Sister Frances finds herself in a tricky situation when a pregnant woman confides in her. Sister Julienne’s new venture hits a stumbling block.

Sister Hilda and Dr Turner are involved with a young woman whose health presents a series of challenges. A complicated pregnancy leads the Nonnatus team on a path of discovery.

Sister Hilda and Dr Turner support a young father with a lung condition whose wife is planning a home birth, and discover he is also coping with the repercussions of a past trauma. Cyril looks for a job that will put his qualifications to good use, a first-time mother struggles to bond with her daughter, and Fred comes up with a way to keep the wards cool during a summer heatwave.