Lucille is on duty when Valerie's family friend Marjory goes into labour.
Marjory's mother Mae is sceptical about Lucille's ability, but is proved wrong when she competently delivers the baby. However, when Marjory's health takes an unexpected turn for the worse, Mae's prejudice and racism causes her to blame Lucille. The team must rally to protect their newest recruit and restore Lucille's confidence in their community.
Sister Winifred makes a case for fathers to be more involved in their wives' pregnancies but finds the men of Poplar may need more persuading. Trixie invites Christopher to eat a home-cooked dinner, but the meal doesn't quite go as planned. And Shelagh gets a little more than she bargained for when their glamorous Hungarian Au Pair arrives.