Sarah Bailey has recently split up with her husband Ben and is reconnecting with her past, and trying to remain a good mother to her children Amber and Eamon. When Amber goes inexplicably missing she reverts back to old patterns as Ben once again becomes the family leader. However when Ben’s methods don’t appear to bear any fruit and as Ben begins to criticise her own performance in the media, she decides to disband the united front they have portrayed for themselves. While the police uncover some clues, nothing they find leads them to any strong conclusions to Amber’s fate. When Sarah is betrayed by her best friend, Maeve Flynn-Dunne, who has just made a quick buck by selling Sarah’s story to a tabloid newspaper, it seems the Baileys have hit rock bottom. But Maeve’s article stirs up interest from a prisoner who claims to have new information about Amber.