Kate and Joe have longed to be parents and are considering in-vitro options, when Danica, a child Kate gave up 17 years ago, appears on Facebook. Kate wants to make up for lost time and invites Danica to live with them. When cracks start to appear in their new happy lives, Kate wonders whether Danica really is her daughter... or an impostor who will do anything, even kill, to get the mother's love she never had!