Jennifer Worthin muistelmiin pohjautuva draama sijoittuu 1950-luvun Itä-Lontooseen ja seuraa kätilöiden sekä hoitajien arkea sodanjälkeisessä yhteisössä.
Two new nuns join Nonnatus House as the midwives deal with a shocking emergency.
Lucille helps elderly hoarder Clarice who is struggling to keep her independence.
Valerie helps a struggling mother accept her son's birth defect.
Trixie's friend is devastated to discover she is pregnant.
A new cervical screening clinic sees a young woman diagnosed with an intersex condition.
Mother Mildred returns and helps a docker family tackle end-stage pneumoconiosis.
Sister Frances attends her first solo birth and Trixie consoles a patient with an STD.
Sister Hilda helps a young cancer patient and the Turners prepare to say goodbye to May.
The Nonnatus House team head to the Outer Hebrides in response to a nursing shortage.