New mother Rachel (Hannah John-Kamen) has the perfect life except she doesn’t recall the recent birth of her baby boy or even being pregnant. It seems everyone is keeping something from her, even her cookie-cutter husband Stephen (Theo Rossi) deflects her probing questions as her strange neighbors begin stalking her. Flooded with memories of an 11-year-old girl who seemed to be her daughter, Rachel’s perfectly constructed world begins to tear apart. Despite her friend’s ominous warning that she will get killed if she remembers, Rachel peels back the layers to discover that she is not human and her life is one big lie. Now, time is running out for Rachel to find her daughter before she forgets again.