Opening with the funeral of Winston Churchill in January 1965, series nine continues with Nonnatus House entering a bold and innovative era. As the tower blocks multiply, and a new East End rises from the ashes of the old, society becomes more prosperous, but more complex. Our familiar team of medics and midwives face unexpected challenges as the population shifts, rules change, and old diseases come back to haunt them. Meanwhile, their own experiences are fuelled by love, loss, and doubt - and the very fabric of their lives is jeopardised when Nonnatus itself comes under threat of demolition.