A secret romance faces heartbreak when teenager Paulette becomes pregnant, a situation complicated by her diabetes and her boyfriend's criminal past. Nurse Crane helps support the young couple, but Paulette's life is endangered when the two run off together. Meanwhile, a group of itinerants comes to the attention of the Nonnatus team when Noakes accuses them of theft. The midwives are drawn into their closed world when they treat a newborn. Patsy organizes a fundraising square dance, to which Fred asks Violet on a date.