Nonnatus House struggles to come to terms with Nancy’s revelation. With Sister Julienne taking her annual leave at the Mother House, Sister Hilda relishes the chance to cover and impress with her leadership. While attending an expectant mother, Sister Frances and Trixie are appalled to learn that Poplar’s housing crisis is worsening, leaving the Nonnatus team vowing to fight for change. It’s a poignant time for the Turner family as Timothy readies to leave for medical school in Edinburgh and Cyril receives news from home, prompting him and Lucille to consider their own future. Meanwhile, a very special baby is born, who causes a rift in a close-knit family and leads many people to count their blessings.