Christmas is fast approaching at Mary Vale and Lizzie, a local mother with two young children, is struggling to pay her rent. Thorpe, the unforgiving landlord, has no time for her tears or strife and demands she pays up or lose her home. The midwives can't stand by and watch this happen and so together with plucky new recruit, Libby, they set out a plan to put a roof over Lizzie's head by Christmas and bring peace to the local community once more