set in December 1966. Christmas promises to be a memorable one at Nonnatus House as Lucille (Leonie Elliott) and Cyril (Zephryn Taitte) prepare for their upcoming winter wedding. The Nonnatus team are faced with their busiest Christmas Day ever as the Maternity Home is filled with expectant Mums to be, each with their own challenging case. Luckily Mother Mildred (Miriam Margolyes) is on hand to support the team.