When an outwardly perfect family moves into a labyrinthine apartment complex with a dark history, their fragile facade soon begins to crumble to the ground in a captivating horror-drama. May's son has gone missing, and, in order to win him back, the devoted mother is going to have to face her worst fears as she navigates a treacherous maze of incomprehensible evil. If she falls prey to the darkness that surrounds her, however, she will suffer a fate worse than death as she is forced to confront every mother's worst nightmare.