Nora Blake, a 29-year-old graphic designer, is no stranger to anxiety and the weight of a fractured past. But when she answers a call from her own phone number late one night, she’s thrust into a nightmare that shatters her sense of reality. The voice on the other end isn’t just a prank—it’s her own voice, pleading for help and warning her of something sinister. As the calls intensify, Nora begins to uncover fragments of a life she doesn’t remember—a life in which she’s being hunted by a malevolent entity that knows her every fear.