When nineteen-year-old Aria moves into her late grandmother's apartment , she expects peeling wallpaper and the smell of mothballs - not whispers from the walls .
At first , it's subtle : shadows that linger too long , footsteps in the hall when she's alone , mirrors that reflect her looking back too slowly .
But the real horror begins when the apartment starts remembering her - things she never said out loud , drawings she never made , voices that sound too much like her own .
And somewhere between the creaking floorboards and the hum of the fridge , Aria begins to realize something horrifying :
She's not losing her mind .
The apartment is learning it .