As Christmas and the wedding of Dr Turner to Shelagh, the former Sister Bernadette, approach an unexploded World War Two bomb is discovered in the area, requiring the residents to be evacuated overnight to the working men's club, where the nurses take charge. Among the evacuees are young marrieds the heavily pregnant Yvonne and her husband Alan for whom the bomb recalls terrifying memories of hand to hand combat in the Korean war. He is psychologically damaged and Trixie, her own father having suffered from shell shock, empathizes. Despite opposition from the nuns she and Jenny ensure that Alan is present at his child's birth to make him feel wanted and give him confidence. Further anxiety is caused by a polio outbreak with the doctor's son Timothy among the victims but there are no fatalities and the bomb is detonated. It does however destroy the convent and new premises are found as nuns and nurses finally attend the wedding. 当圣诞节和特纳医生与谢拉的婚礼临近的时候，一个未爆炸的二战炸弹却在该地区被发现了，于是居民们被疏散到工人俱乐部——此地由护士们负责。撤离者中有年轻的已婚夫妇：怀孕大肚子的伊冯娜和她的丈夫艾伦。炸弹让他们回忆起朝鲜战争中肉搏战的恐怖记忆。艾伦的心理受到了伤害，而特里克西的父亲患有炮弹休克症。尽管遭到修女们的反对，特里克西和珍妮还是确保艾伦在孩子出生时在场，因为这能让他感到被需要，从而给他信心。医生的儿子蒂莫西的小儿麻痹症引发了进一步的焦虑，幸而没有人员死亡，炸弹也被引爆了。虽然炸弹摧毁了修道院，修女和护士们最终还是找到了新的场所，参加了婚礼。
