"London bridge is falling down, falling down, falling down..."
Mary killed her little sister, Alice, out of jealousy. Now, years after Alice's death Mary begins to hear a voice. A voice that traps her with no means of escape. A voice that sings her to sleep every night, plaguing her with nightmares. That voice that sings so sweetly, just who is it? Could it possibly be Alice, back from the dead and burning with revenge?