In my nightmare, I saw a door. It was solid, real, and mysterious. The door was black with an intricately carved handle and keyhole. I stood in front of it and stared, trying to see what was on the other side. All of a sudden, a gust of wind blew the door open, and I saw a dimly lit, white room. There was a single chair in the middle, which reminded me of a dentist's chair. As I looked around, I saw that there was no other furniture in the room.