Mary Roberts is an impoverished child living in a council flat in 1950's London. When she and her sister are left at an orphanage by their mother, they don't think their lives can get any worse. Harry Evans is an orphan who finds himself, with Mary and her sister, on board a ship bound for Australia. They're sent to a farm school for children, where abuse and neglect are rife. A journey that will change their lives forever, and from which they'll never return. Married to her dream man, and with a baby on the way, Dr Mia Sato's life is in perfect order. When her beloved grandmother has a fall, the photograph clutched in her hand prompts Mia to ask questions her grandmother isn't willing to answer. When she cries out a confession that rocks Mia to her core, it leads to a shocking discovery of a past filled with lies, broken families and forced child migration.