You're standing in a white room facing a mirror, if you look left you'll see a doorway in the same wall that leads outside of the room you're standing in. Walk to the doorway and step outside of the room. Now, if you look to your left side there's going to be another room with an open door. Walk into that room which is a closet room with kind of pink cabinets keep walking to the back of the room, and once you're standing in front of the wall you will have arrived.