Once Daneel opens the door and steps through, Meyer follows him. For a moment, there's nothing on the other side of the door. Blankness, the absence of any sound, of any light, of any sign that there's anything beyond the doorway except nothingness. Then he gets the feeling that he's falling, tumbling through something, out of control, although he can tell he's not actually moved from where he's standing. He can't see Daneel anymore, has no idea where he's gone, is about to call out to find out where they are, and then...

He's waking up in bed, disoriented, eyes bleary, shaking his head, wondering what had just happened.