Couldn’t stand the pain of betrayal, Lan, a detective writer, decided to leave her husband and move into an old apartment with Bi, her 5-year-old son. At the same time, Vu, an amateur musician, also chose this apartment as his “shelter”. Once Lan by chance received a music box from the apartment manager, Lan and people surrounding her kept being tormented by horrible nightmares. Hence, Lan and Vu determined to find out the truth behind the spooky music box and the pregnant spirit in red dress.