1962年圣诞节临近时,朱莉安修女接到了来自南非医院Hope Clinic的电话,由于应对急需的脊髓灰质炎疫苗接种计划人手不足,诊所面临倒闭的危险。她和一群助产士(特纳夫妇、弗雷德和汤姆)一起来到诊所,协助诊所里唯一的医生迈拉·菲茨西蒙斯(Myra Fitzsimmons)。目睹了菲利斯在沙漠中的一棵树下接生,他们被物资的缺乏和简陋的条件所震惊。与此同时,他们还面临着种族隔离和痢疾的威胁,而其主因在于缺乏干净的水。最糟糕的是,迈拉医生确信自己得了癌症。在他们返回英格兰之前,特里克西做了一次剖腹产手术;朱莉安修女说服了一个脾气暴躁的白人地主在他的土地上安装一条淡水管道;特纳医生给迈拉带来了好消息————所有的努力都让诊所得以继续。同时,芭芭拉和汤姆也有他们自己的好消息……As Christmas 1962 approaches Sister Julienne gets a call from the Hope Clinic, a mission hospital in South Africa, in danger of closure due to under-staffing on the eve of a much needed polio vaccination programme. Along with a group of midwives, the Turners, Fred and Tom, she arrives at the clinic to assist its lone medic, Myra Fitzsimmons, and they are shocked by the lack of supplies and the rudimentary conditions, with Phyllis delivering a baby under a tree in the desert. They also encounter Apartheid and dysentery, caused by the lack of clean water. Worst of all Dr Myra is convinced she has cancer. Before they return to England Trixie has performed a Caesarean, Sister Julienne has persuaded a gruff white land owner to run a fresh water pipe-line through his property and Dr Turner has good news for Myra, all allowing the clinic to continue. At the same time Barbara and Tom have good news of their own