During the Second World War and the postwar years, the number of babies born to unmarried mothers increased. Rob Skinner was one such baby and was given up for adoption soon after his birth. Growing up in a loving household full of foster children who came and went, Rob believed he was the birth child of the woman he called Ma. It was only when, as a young adult, Rob's potential employer asked for his birth certificate that Rob found out he was adopted. An online search for his birth mother resulted in Rob discovering twin siblings Martin and Sue. Rob meets up with his siblings for the first time in over a year and reveals some surprising news about his biological father. Sisters Sue and Eileen spent 50 years apart and led completely different lives. Both went to live in a baby home when their mum became unable to cope. Eileen then left to live with her biological dad, and Sue was subsequently adopted by the parents of one of the young nurses, Dilys, who worked at the baby home. Years later, when Sue's adoptive mum and dad died, she started to do some digging and finally tracked down her half-sister Eileen. Now the newly united sisters are meeting up with Dilys, the only person who remembers Eileen as a baby.