As Sister Veronica weighs her future with the Order, Dr. Turner makes a final stand against the council’s news before the maternity home closes. Elsewhere, the Mullucks campaign for the rights of all thalidomide victims.

The challenges of midwifery hit close to home when a Mother and Baby Home is evacuated. Nancy’s wedding plans take a surprising turn, and Sister Catherine takes her First Vows.

The aftermath of a tragic incident in the heart of Poplar ripples through the community. As Nonnatus House faces its darkest day, the team must overcome personal anguish to help the injured.

Gather one last time with the three remaining home cooks as they get ready for the grand finale feast. In the final round, their challenge is to prepare an entire meal that represents their Great American Recipe. Who will be named the winner?

Miss Higgins receives an unexpected visitor, and Sister Monica Joan ruffles feathers. Poplar votes for its Mother of the Year.

As Trixie and Matthew’s wedding officially begins, a series of small and great disasters threaten to impede the day. A horrific car crash turns into a race against time. Sister Julienne hatches a plan to save Nonnatus House once and for all.

It is the night of the Midsummer Ball, and romance, jealousy, and betrayal fill the air. Devastating events conspire to leave Charlotte and the Parker family facing difficult choices.